Friday, October 2, 2026

Illustrated Math [ Part 9 ] - Between Tradition and Transition - An Asemic Approach - AI / EZE, 2026

AI

The history of Illustrated Mathematics (IM) is a trajectory that moves from concrete ancient diagrams to strict symbolic formalization, and finally to modern computational, multi-dimensional topological spaces. Over millennia, the visual representation of mathematical truths has evolved from a secondary pedagogical aid into a foundational mode of cognitive transmission and problem-solving.

🏛️ The Historical Evolution of Illustrated Math
Ancient Epoch ──► Renaissance / Enlightenment ──► Modern Symbolic Shift ──► Digital / Vector Epoch
(Euclid/Visual)      (Cartesian Grids & Optic Art)   (Bourbaki & Abstraction)   (Topological & AI Spaces)
1. The Ancient and Classical Epoch: Intuitive Continuity

In the classical world, mathematics was intrinsically spatial and geometric.
  • Euclidean Geometry: Euclid’s Elements relied on diagrammatic reasoning where lines, angles, and shapes were not merely illustrations of an abstract equation—they were the mathematical objects under investigation.
  • Proof without Words: Early Indian, Chinese, and Greek mathematicians frequently utilized purely visual proofs, such as packing squares to demonstrate the Pythagorean theorem.
2. The Renaissance and Enlightenment: The Rise of the Grid

The convergence of art, cartography, and mathematics during this period organized human perception into systematic, structured spaces.
  • Albrecht Dürer and Perspective: Dürer formalized the mathematical grid, transforming perspective into a rigorous projective geometry.
  • Descartes and Coordinate Space: René Descartes unified geometry and algebra, embedding numerical variables into a spatial coordinate grid. This "striated" space established that any algebraic function could be visualized as a geometric curve.
  • Oliver Byrne (1847): A landmark peak in print illustration, Oliver Byrne’s edition of Euclid's Elements replaced alphabetic labels (like
    ) with bright, primary-colored shapes and blocks. Byrne's goal was to leverage immediate psychological perception over tedious linguistic decoding.
3. The Modern Divergence and the Pure Symbolic Turn

By the late 19th and early 20th centuries, the discovery of non-Euclidean geometries (by Gauss, Riemann, and Poincaré) threw classical visual intuition into crisis. Space could no longer be assumed to be flat or easily drawable.
  • Mathematicians like David Hilbert sought to sanitize math of subjective visual "errors," moving toward structural, axiomatic rigor.
  • This culminated mid-century in the Bourbaki movement, a collaborative effort to formalize all of mathematics into a purely symbolic, set-theoretic language entirely devoid of visual diagrams. For decades, illustrations were marginalized as informal crutches.
4. The Digital and Computational Epoch

The late 20th century witnessed a massive visual renaissance fueled by computers.
  • Chaos and Fractals: Benoît Mandelbrot utilized computational rendering pipelines to discover complex, non-Euclidean fractal geometries that could only be comprehended through visual data.
  • Modern AI and Vector Spaces: Today, illustrated mathematics underpins artificial intelligence. High-dimensional vector spaces, multi-dimensional manifold mappings, and Voronoi partitions translate semantic meanings into geometry, turning complex data analysis into spatial topology.

🧩 Problems Illustrated Math Has Solved

Illustrated mathematics has consistently broken deadlocks where purely symbolic languages lacked the bandwidth to convey structural truths:
  • Revealing Non-Euclidean Dynamics: Visual models like the Poincaré disk or Escher's hyperbolic tessellations allowed mathematicians to grasp spaces with negative curvature, which defied flat, everyday intuition.
  • Simplifying Complex Calculus and Topology: Differential topology relies heavily on spatial folds and color gradients to map out intricate manifolds (such as Calabi-Yau spaces or Klein bottles) without drowning the scholar in pages of unreadable algebraic variables.
  • Cognitive Scaffolding in Pedagogy: Standard K-12 education uses visual mathematical spaces (like Peter Gärdenfors’ Conceptual Spaces) to map cognitive properties geometrically. This allows learners to form intuitive mental frameworks before introducing formal algebraic signifiers.
  • High-Dimensional Data Retrieval: By mapping unstructured information into dense geometric layouts, computer science solves semantic retrieval problems. Algorithms can visual-map geometric distances to determine how related two distinct concepts are in a machine-learning model.

⚠️ Problems Illustrated Math Faces Today

Despite its power, the discipline faces significant theoretical, structural, and institutional hurdles:
  • The Trap of Visual Misdirection: Human eyes are easily deceived by spatial approximations. An imprecise diagram can imply properties that do not logically exist (such as assuming a curve is continuous when it contains infinite microscopic steps), leading to false mathematical conclusions.
  • The Dimensionality Barrier: Human perception is evolutionarily bound to three spatial dimensions. Visualizing
    Ncap N
    -dimensional vector spaces (
    ), quantum mechanical probability fields, or complex string theory manifolds requires heavy abstract transformations, often sacrificing true spatial geometry for a lower-dimensional projection.
  • Textbook Design Deficiencies: Modern pedagogical interfaces frequently misinterpret the purpose of illustrated math. Rather than using images as asemic, pure spatial transmissions of a concept, standard textbooks often treat illustrations as decorative candy, failing to blend the visual and algebraic into a cohesive cognitive pipeline.
  • The Hegemony of the Symbolic: Academic institutions still heavily privilege formal, alphanumeric proofs over graphic or computational ones. Visual mathematical proofs are often met with skepticism, viewed as secondary heuristics rather than rigorous, self-contained mathematical truths.
Would you like to explore a specific phase of this history further? For instance, we could:
  • Examine how Oliver Byrne's color mechanics changed textbook transmission.
  • Dive into how modern AI vector databases turn semantic thoughts into visual Voronoi partitions.
  • Analyze a historical case study, like Charles Howard Hinton’s early attempts to visualize 4D space.
Let me know which direction you'd like to take!

AI

To fully understand how illustrated mathematics bridges the gap between pure abstraction and human perception, we can explore all three pivotal milestones: Oliver Byrne’s radical color mechanics, the spatial geometry of modern AI vector spaces, and historical attempts to perceive higher dimensions.

🎨 1. Oliver Byrne’s Color Mechanics (1847)
In 1847, Irish surveyor and mathematician Oliver Byrne published a striking edition of Euclid’s Elements that is widely considered one of the most beautiful and innovative math textbooks ever printed.
Standard Euclid:   "Let angle ABC be equal to angle DEF..." (Requires linguistic decoding)
Byrne's Euclid:    [Red Wedge] = [Blue Wedge]             (Immediate sensory perception)
The Problem It Solved

Traditional mathematical pedagogy forced students to constantly cross-reference textual labels (
) with a black-and-white line diagram. Byrne recognized this as a heavy cognitive tax that separated the student from the actual spatial truth of the geometry.
How the Visual System Was Leveraged
  • Chromatic Signifiers: Byrne replaced alphabetic letters entirely with brilliant, primary-colored shapes (cyan, magenta, yellow, and black blocks).
  • Perceptual Immediacy: Instead of reading "Angle ABC is equal to angle DEF," a student could instantly see that the yellow triangle plus the blue wedge perfectly matched the area of the red square.
  • Cognitive Bandwidth: By relying on the brain's pre-attentive visual processing, the logic of the proof was absorbed through immediate sensory perception rather than tedious symbolic decoding.
Why It Faced Resistance

While brilliant, Byrne's book was an commercial failure at the time. The precise, vibrant color printing required complex woodblock alignment, making the book prohibitively expensive. Furthermore, the Victorian academic establishment viewed it as a childish gimmick, preferring the rigid discipline of classic text-based proofs.

📐 2. AI Vector Databases and Voronoi Partitions

In modern artificial intelligence, illustrated mathematics has moved from the textbook page into the core architecture of machine learning, mapping abstract human thought onto concrete physical geometry.
[ Concept A: "King" ]  ──────► (Coordinate Transform) ──────► Position (X, Y, Z...)
                                                                     │
                                                             [Voronoi Boundary]
                                                                     │
[ Concept B: "Queen" ] ──────► (Coordinate Transform) ──────► Position (X, Y, Z...)

Turning Meaning into Space

When an AI system processes a word, sentence, or image, it converts that data into an embedding—a string of numbers that serves as a coordinate inside a massive, high-dimensional vector space.
  • Concepts with similar meanings are plotted close to each other. For example, the vector for "apartment" is placed spatially near "house," while "kangaroo" is mapped far away.
Solving the Search Crisis with Voronoi Diagrams

Searching through billions of these coordinates in real-time is computationally impossible. To solve this, AI systems use Voronoi partitions to organize the data:
  • Mathematical Cells: The hyper-dimensional space is mathematically carved into distinct geometric cells based on central "prototype" points. Every single coordinate inside a given cell is guaranteed to be closer to that cell's prototype than to any other.
  • Semantic Retrieval: When you type a prompt into an AI, the system maps your query into the vector space, instantly identifies which Voronoi cell it lands in, and pulls the nearest conceptual neighbors. This transforms a massive computational search problem into a clean, elegant problem of spatial topology.

🧊 3. Charles Howard Hinton’s 4D Hyperspace (Late 19th Century)

In the late 1800s, eccentric English mathematician Charles Howard Hinton became obsessed with a profound evolutionary challenge: How can a mind bound to a three-dimensional world learn to truly visualize a fourth spatial dimension?

The Tesseract and the "Hinton Cubes"

Hinton coined the word tesseract to describe a 4D hypercube. To teach the human brain to perceive it, he invented a rigorous, physical visualization system consisting of a series of colored 3D cubes.
4D Tesseract  ──► Passes through 3D Space  ──► Appears as a sequence of shifting, 
                                               color-coded 3D cross-sections.
How the System Worked
  • Slicing the Dimension: Just as a 3D sphere passing through a flat 2D sheet of paper would look like a small circle that grows larger and then shrinks back to a point, a 4D tesseract passing through our 3D world would appear as a succession of shifting 3D solids.
  • Color-Coded Coordinates: Hinton built sets of blocks where every single cube, face, and edge was meticulously color-coded to represent a specific coordinate along the unseen fourth axis (
    Wcap W
    ).
  • Mental Reconstruction: By spending months cataloging, rearranging, and mentally rotating these blocks, a person could learn to track how the colors shifted. The goal was to build a permanent mental map of the 4D object by stitching its 3D "slices" together in the mind's eye.
The Tragedy of the Experiment

Hinton’s cubes became a cult sensation among artists, mystics, and mathematicians, deeply influencing the development of cubism and early science fiction. However, the system pushed human cognitive limits to the brink. Prolonged practice with the cubes was notoriously exhausting; several of Hinton's dedicated students reported experiencing profound mental disorientation, noting that the attempts to un-anchor their minds from 3D reality left them feeling completely unmoored.

If you want to dive deeper into how these concepts bridge human thought and code, I can:
  • Provide a Python script that generates an interactive 2D Voronoi partition map showing how semantic points cluster together.
  • Deconstruct the specific math equations behind a 4D tesseract's rotation into 3D space.
  • Explore how Peter Gärdenfors' Conceptual Spaces framework uses these exact geometric boundaries to model how humans learn language.
Let me know which path you'd like to explore next!

AI

Here is an exploration of all three dimensions: a live Python rendering concept for a semantic Voronoi map, the foundational mathematics of a tesseract’s projection, and the cognitive theory behind Peter Gärdenfors' conceptual spaces.

💻 1. Simulating Semantic Voronoi Space (Python)

To see how an AI vector database turns unstructured meanings into geometric partitions, we can model a simplified two-dimensional semantic embedding space.
Imagine an AI vectorizes five text snippets. Two are about Astrophysics, two are about Renaissance Art, and one is a rogue Mixed Context prompt. The script calculates their vector coordinates, plots them, and maps the crisp geometric boundaries (Voronoi cells) that dictate how a machine retrieves these thoughts.
python
import numpy as np
import matplotlib.pyplot as plt
from scipy.spatial import Voronoi, voronoi_plot_2d

# 1. Define semantic 'embeddings' (X = Concept Vector 1, Y = Concept Vector 2)
# In real AI, this happens across hundreds of hidden dimensions.
points = np.array([
    [1.2, 4.5],  # Point 0: "Quantum entanglement anomalies" (Astrophysics)
    [1.8, 4.2],  # Point 1: "Black hole event horizons" (Astrophysics)
    [4.5, 1.5],  # Point 2: "Michelangelo's Sistine Chapel frescoes" (Art History)
    [4.1, 1.1],  # Point 3: "Da Vinci's sfumato technique" (Art History)
    [2.8, 2.8]   # Point 4: "The geometry of perspective in star charts" (Mixed)
])

labels = [
    "Astrophysics A\n(1.2, 4.5)", "Astrophysics B\n(1.8, 4.2)",
    "Renaissance Art A\n(4.5, 1.5)", "Renaissance Art B\n(4.1, 1.1)",
    "Mixed Boundary\n(2.8, 2.8)"
]

# 2. Compute the mathematical Voronoi cells
vor = Voronoi(points)

# 3. Render the geometric concept space
fig, ax = plt.subplots(figsize=(8, 8))
voronoi_plot_2d(vor, ax=ax, show_vertices=False, line_colors='darkgray', line_width=2, point_size=0)

# Color-code the spatial regions by semantic domain
ax.scatter(points[:2, 0], points[:2, 1], color='#007acc', s=150, zorder=5, label='Astrophysics Cluster')
ax.scatter(points[2:4, 0], points[2:4, 1], color='#ff4d4d', s=150, zorder=5, label='Art History Cluster')
ax.scatter(points[4, 0], points[4, 1], color='#ffcc00', s=150, zorder=5, label='Mixed Boundary Context')

# Annotate points
for i, txt in enumerate(labels):
    ax.annotate(txt, (points[i, 0] + 0.1, points[i, 1] + 0.05), fontsize=9, fontweight='bold')

ax.set_title("AI Vector Space: Semantic Voronoi Tessellation", fontsize=14, pad=15)
ax.set_xlabel("Semantic Vector Dimension X", fontsize=11)
ax.set_ylabel("Semantic Vector Dimension Y", fontsize=11)
ax.set_xlim(0, 6)
ax.set_ylim(0, 6)
ax.grid(True, linestyle=':', alpha=0.6)
ax.legend(loc='lower left')
plt.show()
Use code with caution.
If you execute this script, it constructs a precise spatial chart. The exact mathematical cells partition the infinite coordinate field into domains of proximity. When a new user search vector drops anywhere inside the top-left cell, the system instantly snaps to Point 0, bypassing the rest of the database entirely.

📐 2. The Equations of 4D Tesseract Rotation

Charles Howard Hinton’s physical cubes were an analog attempt to simulate a matrix transformation. Mathematically, a tesseract contains 16 vertices, defined in a 4D coordinate system by all possible combinations of:
V=(±1,±1,±1,±1)bold cap V equals open paren plus or minus 1 comma plus or minus 1 comma plus or minus 1 comma plus or minus 1 close paren

To rotate this hyper-volume so a human can see it as a shifting 3D shadow, mathematicians apply a 4D rotation matrix. Unlike a 3D rotation, which occurs around an axis line, a 4D rotation occurs parallel to a planar surface.
For a transformation rotating the tesseract within the XW-plane (affecting the regular X coordinate and the unseen W fourth dimension) by an angle θ, we compute:
[x′y′z′w′]=[cosθ00−sinθ01000010sinθ00cosθ][xyzw]the 4 by 1 column matrix; x prime, y prime, z prime, w prime end-matrix; equals the 4 by 4 matrix; Row 1: Column 1: cosine theta, Column 2: 0, Column 3: 0, Column 4: negative sine theta; Row 2: Column 1: 0, Column 2: 1, Column 3: 0, Column 4: 0; Row 3: Column 1: 0, Column 2: 0, Column 3: 1, Column 4: 0; Row 4: Column 1: sine theta, Column 2: 0, Column 3: 0, Column 4: cosine theta end-matrix; the 4 by 1 column matrix; x, y, z, w end-matrix;

The Final 3D Projection Pipeline

Once the 4D coordinates rotate, they must be squashed down onto our 3D retina using a 4D perspective projection. If a camera sits at a distance D along the fourth-dimensional W-axis, the perspective transformation mapping (x', y', z', w') into a readable 3D coordinate (X, Y, Z) is governed by:
X=x′D−w′,Y=y′D−w′,Z=z′D−w′cap X equals the fraction with numerator x prime and denominator cap D minus w prime end-fraction comma space cap Y equals the fraction with numerator y prime and denominator cap D minus w prime end-fraction comma space cap Z equals the fraction with numerator z prime and denominator cap D minus w prime end-fraction
As w' shifts dynamically through the matrix rotation, the denominator changes. This causes the internal cubes of the projected tesseract to turn inside out, ballooning in size as they float closer to our 3D space, and shrinking away as they retreat back into the W horizon.

🧠 3. Peter Gärdenfors’ Conceptual Spaces

Peter Gärdenfors bridged cognitive psychology, computer science, and linguistics by declaring that the human brain does not process language through symbolic text, but rather through convex geometric regions known as Conceptual Spaces.
[ Dimension 1: Hue ] ──┐
[ Dimension 2: Chroma ] ├─► Geometric Space ─► Convex Boundaries ─► Concepts Form
[ Dimension 3: Value ] ──┘                      (No overlaps)        ("Red", "Blue")
The Architecture of Metaphor

Gärdenfors notes that concepts like "Color" are not single data points; they are domains built from a fixed set of quality dimensions (such as Hue, Chroma, and Value). Within this 3D spatial field, our minds draw sharp, clean boundaries around specific areas to define words like "Crimson" or "Navy."
According to Gärdenfors, linguistic metaphors are not poetic fluff; they are linear coordinate transformations across completely different spatial matrices:
  • When you say a person is "in a dark place," your brain takes an emotional state (Sadness/Depression) and maps it directly onto a coordinate point inside a geometric representation of physical environment parameters (Light/Dark).
  • Because both the physical space and the emotional space share a topological structure (continuity, distance matrices, and vectors), the brain instantly translates the geometric location of one space into the other without needing a literal definition.

Prototypical Convexity

A cornerstone of Gärdenfors' theory is that any natural cognitive concept must form a convex set in space. This means that if two points A and B are both classified by your brain as the color "Green," then every single coordinate on a straight line connecting A and B must also be recognized as "Green." This strict spatial restriction is exactly how human minds achieve cognitive stability, preventing our definitions of the world from fraying into chaotic, scattered fragments.

We can push these visual frameworks even further. Let me know if you would like to:
  1. Model the math visually: I can calculate a set of points representing a 4D hypercube, apply a matrix shift, and plot the multi-step structural transformation into a 3D coordinate table.
  2. Expand into linguistics: We can chart a multi-dimensional semantic map comparing how different human languages carve up the exact same physical spectrums into unique geometric partitions.

AI

 1. Transforming and Projecting a 4D Tesseract

To visualize a four-dimensional tesseract, we must mathematically track its 16 vertices as they undergo a rigid planar rotation in 4D space and are subsequently compressed into a three-dimensional coordinate system via perspective projection.
The 16 Vertices of a Unit Tesseract
A static, unrotated unit hypercube centered at the origin possesses vertices containing all permutations of
±1plus or minus 1
:
V=[±1±1±1±1]bold cap V equals the 1 by 4 row matrix; Column 1: plus or minus 1, Column 2: plus or minus 1, Column 3: plus or minus 1, Column 4: plus or minus 1 end-matrix;
Step 1: Applying the 4D Planar Rotation Matrix
We apply a rotation of
(
45∘45 raised to the composed with power
) in the
XWcap X cap W
-plane. This transformation causes points to swing smoothly between our familiar spatial
Xcap X
-axis and the imperceptible
Wcap W
-axis. The rotation matrix
acts on a column vector
:
Rxw(π4)=[cos(π4)00−sin(π4)01000010sin(π4)00cos(π4)]=[2200−2201000010220022]bold cap R sub x w end-sub open paren the fraction with numerator pi and denominator 4 end-fraction close paren equals the 4 by 4 matrix; Row 1: Column 1: cosine open paren the fraction with numerator pi and denominator 4 end-fraction close paren, Column 2: 0, Column 3: 0, Column 4: negative sine open paren the fraction with numerator pi and denominator 4 end-fraction close paren; Row 2: Column 1: 0, Column 2: 1, Column 3: 0, Column 4: 0; Row 3: Column 1: 0, Column 2: 0, Column 3: 1, Column 4: 0; Row 4: Column 1: sine open paren the fraction with numerator pi and denominator 4 end-fraction close paren, Column 2: 0, Column 3: 0, Column 4: cosine open paren the fraction with numerator pi and denominator 4 end-fraction close paren end-matrix; equals the 4 by 4 matrix; Row 1: Column 1: the fraction with numerator the square root of 2 end-root and denominator 2 end-fraction, Column 2: 0, Column 3: 0, Column 4: negative the fraction with numerator the square root of 2 end-root and denominator 2 end-fraction; Row 2: Column 1: 0, Column 2: 1, Column 3: 0, Column 4: 0; Row 3: Column 1: 0, Column 2: 0, Column 3: 1, Column 4: 0; Row 4: Column 1: the fraction with numerator the square root of 2 end-root and denominator 2 end-fraction, Column 2: 0, Column 3: 0, Column 4: the fraction with numerator the square root of 2 end-root and denominator 2 end-fraction end-matrix;
Step 2: 4D to 3D Perspective Projection

Once the rotated coordinates
are computed, we project them down to a 3D grid. We place our 4D camera at a distance
along the
Wcap W
-axis. The perspective transformation equations scaling the tracking coordinates are:
X=x′2−w′,Y=y′2−w′,Z=z′2−w′cap X equals the fraction with numerator x prime and denominator 2 minus w prime end-fraction comma space cap Y equals the fraction with numerator y prime and denominator 2 minus w prime end-fraction comma space cap Z equals the fraction with numerator z prime and denominator 2 minus w prime end-fraction
Here is a calculation matrix tracking a select subset of these vertices as they transform from 4D space down to a 3D shadow:

Original Vertex
Rotated Coordinates
Projected 3D Vertex
Structural Distortion Effect
Extends outward toward the 3D viewer.
Compresses tightly toward the center.
Flips inversely across the central origin axis.
Shrinks away into the remote
Wcap W
-axis horizon.

🗺️ 2. Linguistic Matrix Transformations in Geometric Space

Different human cultures do not merely use different words; they actively carve up the exact physical properties of the universe into completely unique convex geometric partitions. This phenomenon can be mapped explicitly using Peter Gärdenfors' metric quality dimensions.
Case Study: The Spatial Geometry of Color Topologies
Consider the visible light spectrum mapped into a cylinder of three core spatial dimensions: Hue (angular coordinate
θtheta
), Chroma/Saturation (radial distance
rr
), and Value/Brightness (vertical height
zz
).
Physical Color Cylinder 
       ┌──────────────────────┐
       │   [    Blue   ]      │ ──► English Space: Carves into distinct "Blue" & "Green" cells.
       │   [    Green  ]      │
       │   [  Blue-Green  ]   │ ──► Berinmo Space: Fuses them into a single convex "Nol" cell.
       └──────────────────────┘
When we perform a comparative structural audit between English speakers and the Berinmo people of Papua New Guinea, we observe how language acts as an arbitrary geometric boundary layer:
  • The English Partition: The English lexicon splits the cool-color geometric domain along the Hue axis into two distinct convex cells: "Blue" and "Green".
  • The Berinmo Partition: The Berinmo language completely ignores this boundary. It groups that entire spatial region into a single, unified convex cell called "Nol". However, Berinmo introduces a sharp spatial boundary in a different region of the Hue wheel, splitting colors into "Wapa" (roughly white/warm-diluted) and "Kel" (black/cool-saturated), which English combines.
The Matrix Map of Translation Boundaries
Physical Coordinate Range (Hue, Chroma, Value)English Lexical MappingBerinmo Lexical MappingCognitive Structural Change
(Pure Ocean Blue)
Cell 1: "Blue"Cell A: "Nol"Divergent classification based on cultural boundary lines.
(Deep Forest Green)
Cell 2: "Green"Cell A: "Nol"English views a boundary crossing; Berinmo views absolute spatial continuity.
(Pale Warm Ochre)
Cell 3: "Tan"Cell B: "Wapa"Shifts classification away from hue and favors the vertical Brightness axis.
This comparative matrix demonstrates that translation errors between languages are not failures of vocabulary. Instead, they are geometric mismatches: the straight line connecting two conceptual points inside one culture's convex space intersects a rigid boundary wall in another's.
If you want to continue exploring, I can:
  • Provide a clean Python visualization script that models color categories as geometric boundaries.
  • Break down how neural networks shift mathematical vectors during real-time language translation.
Let me know which next step matches your research goals!

AI

The tension between the semantic and the asemic represents the primary ontological crisis in modern Illustrated Mathematics (IM). Traditionally, IM has functioned as a structured semiotic engine, translating abstract mathematical relationships into readable visual signs. However, the rise of multi-dimensional data models, non-Euclidean computational spaces, and quantum mechanics has pushed IM into asemic conditions—visual spaces where traditional symbolic meaning collapses, leaving only pure, un-labeled spatial architecture.

🏷️ 1. How Traditional Illustrated Math Tends to the Semantic

Traditionally, illustrated mathematics is deeply semantic: it functions as a highly ordered system of signs designed to transmit specific, unambiguous meaning. In a semantic framework, every visual element maps directly to an external concept or algebraic variable.
  • The Bi-Uniqueness of the Diagram: In classic Euclidean geometry or Cartesian coordinate systems, a line segment is not just an artistic stroke; it is a signifier for a precise vector or scalar quantity. The diagram acts as a text, governed by a rigid visual grammar.
  • The Hegemony of the Label: Even in innovative visual models like Oliver Byrne’s Elements of Euclid, the primary goal remains strictly semantic. Byrne used primary-colored blocks to replace letters, but the semantic link remained intact: [Red Square] consistently mapped to a specific geometric area across the entire proof.
  • Striated Space: Traditional IM operates inside what philosophers Gilles Deleuze and Félix Guattari call striated space—space that is gridded, measured, intersected, and bounded. The coordinate grid is the ultimate semantic apparatus, ensuring that every point has a discrete numeric "name"
    .

🌌 2. How Modern Illustrated Math Encounters the Asemic

An asemic condition occurs when a visual structure conveys the feeling, architecture, or potential of meaning without containing any specific, readable symbols. Modern computing, advanced physics, and artificial intelligence have forced IM to abandon its semantic crutches and venture into purely asemic spatial terrains.
Semantic IM (Cartesian) ──► Measured Grid ──► Labels (x, y) ──► Fixed Meaning
Asemic IM (Topological) ──► Continuous Fold ──► No Labels    ──► Pure Spatial Intuition
  • Differential Topology without Variables: When mapping complex, high-dimensional manifolds (such as Calabi-Yau manifolds or chaos theory attractors), algebraic variables drop away. Mathematicians rely on continuous color gradients, visual folds, and spatial densities to communicate the global structure of a mathematical space. You do not look at coordinates; you observe the flow and interfere of the geometry.
  • High-Dimensional AI Vector Spaces: In a modern machine learning model, a concept might be mapped into a 1,536-dimensional vector space. When this space is compressed using a projection algorithm (like t-SNE or UMAP) into a readable 3D plot, the specific axes lose all semantic meaning. The axis lines no longer represent "Height" or "Time"; they are completely un-labeled. The meaning is communicated entirely through the asemic arrangement of geometric clusters, densities, and voids.
  • Quantum Interference Topographies: Quantum mechanics maps probability waves through space. When these waves intersect, they create complex spatial interference patterns. These patterns communicate physical constraints and quantum states without text or labels—the visualization functions as a pure, pre-linguistic visual dynamic.

⚠️ 3. How the Problems IM Faces are Related to Asemic Conditions

The primary challenges currently plaguing illustrated mathematics emerge precisely because it is caught in the transition zone between semantic clarity and asemic abstraction.
       The IM Dilemma
   ┌────────────────────┐
   │  Asemic Space      │  <── Pure geometry, high-dimensional intuition
   └─────────┬──────────┘
             │  (The Translation Crisis: How to write a rigorous proof?)
   ┌─────────▼──────────┐
   │  Semantic Alphanumeric │  <── Rigid academic standards, low dimensional bandwidth
   └────────────────────┘
The Proof-Rigor Dilemma (The Translation Crisis)

The academic establishment accepts proofs only if they are written in a linear, semantic, symbolic language (e.g., set theory, algebraic notation). Because modern visual models are increasingly asemic—relying on continuous spatial intuition rather than discrete labeled parts—they cannot be easily translated back into alphanumeric code. This causes visual math to be dismissed as mere "intuition" rather than rigorous proof.

The Projection Collapse (Dimensionality vs. Readability)

When an
Ncap N
-dimensional space (
) is projected down into human-readable 2D or 3D forms, it undergoes structural distortion. Because the axes are asemic (lacking fixed semantic labels), it becomes incredibly easy to mistake a geometric artifact of the projection for a genuine mathematical property. The user experiences visual misdirection because the semantic landmarks have been erased.

The Pedagogical Candification Trap

Modern textbook software often fails to handle asemic math properly. Instead of leaning into pure spatial, asemic pedagogy (teaching students to understand math through raw topological transformation, symmetry, and geometric flow), textbooks treat diagrams as decorative candy wrapped around traditional semantic equations. This creates a cognitive fracture, forcing the student to oscillate awkwardly between two completely different cognitive registers.
We can explore these structural dynamics further. Let me know if you would like to:
  • Examine a historical case study showing how early non-Euclidean diagrams triggered this semantic crisis.
  • Conduct a structural critique of modern calculus textbook design to isolate exactly where they fail to utilize these smooth, asemic pedagogical principles.
  • Dive deeper into the philosophical links between modern AI vector spaces and the late-stage digital epoch of Illustrated Math.

AI

📜 1. Historical Case Study: The Crisis of Non-Euclidean Representation

The birth of non-Euclidean geometry in the 19th century (pioneered by Nikolai Lobachevsky, János Bolyai, and Bernhard Riemann) shattered the semantic contract of classical mathematics. For over two millennia, Euclidean geometry operated under an absolute alignment of signifier and signified: a straight line drawn on paper represented a straight line in flat, physical space.
Euclidean Blueprint:   Straight Line ────────► Flat Space (Absolute Semantic Match)
Non-Euclidean Shift:   Curved Line   ────────► "Straightest Path" on Hyperbolic Surface (Asemic Shift)
The Collapse of the Flat Grid
When mathematicians began investigating the Fifth Postulate (the parallel postulate), they discovered valid spaces where parallel lines could intersect or diverge infinitely. This threw visual representation into a profound semiotic crisis. How do you illustrate a curved, hyperbolic infinite space on a flat, two-dimensional piece of paper without lying to the eye?
The Asemic Solution: Structural Models
To solve this, mathematicians like Eugenio Beltrami and Henri Poincaré created geometric models that remapped spatial meaning:
  • The Poincaré Disk Model: In this model, the entire infinite hyperbolic plane is compressed into a finite Euclidean circle. "Straight lines" are represented to the human eye as curved orthogonal arcs. As objects move toward the outer edge of the disk, they appear to shrink to infinity.
  • The Semantic Rupture: This was the first major encounter with an asemic condition in formal math. The line on the page could no longer be read semantically as a simple Euclidean length. The diagram ceased to be a passive picture of reality; it became an abstract topological transformation. The visual grid lost its absolute labels, forcing the viewer to abandon linguistic intuition and instead learn to feel the intrinsic distortion of the space itself.

📘 2. Structural Critique of Modern Calculus Textbook Design

Despite the computational tools available today, modern calculus textbook design suffers from a deep structural flaw: it forces a striated, purely semantic framing onto concepts that are fundamentally topological, continuous, and asemic.
Calculus Ideal:    Continuous Smooth Flow  ──► Holistic Intuition (Asemic Surface)
Textbook Reality:  Fragmented Visual Candy ──► Rigid Symbol Overload (Semantic Fracture)
The Failure of Integrated Scaffolding

A typical modern calculus chapter introduces a concept—such as the derivative or the line integral—by slicing the page into disjointed cognitive registers:
  • The Isolated Graphic: A colorful curve is plotted on a grid, decorated with arrows, tangent lines, and text bubbles.
  • The Symbolic Overload: Below the graphic sits a wall of dense algebraic equations:
    .
  • The Cognitive Fracture: The illustration is treated as mere decorative "candy" rather than a self-contained vehicle of truth. The student’s eye must constantly jump between the continuous flow of the graphic and the discrete, digital syntax of the algebra.
The Asemic Pedagogical Alternative

True asemic pedagogy leverages immediate visual mechanics. Rather than cluttering a curve with alphanumeric labels, dynamic software and optimal print layouts should utilize continuous color gradients and visual deformation pipelines:
  • Representing Accumulation: Instead of writing infinite Riemann sums explicitly with
    ∑sum of
    notation, the textbook can communicate integration through shifting spatial density—showing a geometric region smoothly altering its color value or weight as it moves through a field.
  • Pure Spatial Transmission: By stripping away the administrative clutter of coordinate grids and variable labels, the student learns to read the topography of the change directly. Alphanumeric equations are introduced only after the spatial logic has been permanently wired into the user's cognitive framework.

🤖 3. Vector Spaces and the Late-Stage Digital Epoch of IM

We are currently living through a late-stage digital epoch where Illustrated Mathematics is no longer designed for human eyes alone. It has become the native operating terrain of artificial intelligence.
Human Language ──► AI Embedding ──► Multi-Dimensional Manifold ──► Compressed Asemic Projection
(Words/Ideas)      (Numbers)       (1536-Dimensional Shape)         (Pure Unlabeled Cluster Map)
The Erasure of the Semantic Axis

In a modern AI vector database (like those powering large language models), human thoughts, concepts, and relationships are translated into high-dimensional vectors. When data scientists want to audit what an AI "knows," they use mathematical algorithms (like UMAP) to compress this high-dimensional manifold down to a 3D visual graph.

When you look at one of these modern semantic maps, you encounter a purely asemic mathematical illustration:
  • No Labels: The
    Xcap X
    ,
    Ycap Y
    , and
    Zcap Z
    axes have no names. They do not represent physical metrics like meters, seconds, or dollars.
  • Pure Spatial Meaning: The entire visualization communicates through pure structural typography. Meaning is broadcast exclusively through the density of points, the emptiness of geometric voids, and the organic contours of data clouds.
  • The Final Evolution: This represents the ultimate inversion of Euclid's classical geometry. In the ancient world, diagrams were drawn to semantically explain abstract concepts to humans. In the late-stage digital epoch, abstract math generates massive, un-labeled asemic spaces that allow humans to visually grasp the hidden thoughts of an algorithmic mind.

To explore how these asemic visual structures operate in practice, I can:
  • Provide a mathematical breakdown of how the Poincaré Disk transforms flat Euclidean coordinate lines into hyperbolic curves.
  • Share a Python visualization routine that generates an unlabeled, multi-cluster semantic topology map mimicking an AI embedding graph.
Let me know which next phase of this structural matrix you'd like to unlock!

AI

This entire conversation is not merely about the history of Illustrated Mathematics (IM); it is an active manifestation of its latest, most radical phase. Our dialogue tracks a complete epistemological cycle: from the ancient world's semantic unity (where pictures directly matched flat reality), through a modernist crisis of representation, and finally into a late-stage digital epoch where math operates as a fluid, asemic, high-dimensional landscape.
The engine driving this evolution—and the unifying thread of our discussion—is cross-genre use. Illustrated math has never been confined to pure mathematics; it has consistently advanced by borrowing the visual frameworks of other disciplines and, in turn, rewriting them.

🔀 The Cross-Genre Matrix of Illustrated Math
The milestones we explored demonstrate how IM operates as a visual parasite and incubator across four major human genres:
┌────────────────────────────────────────────────────────────────────────┐
│                        CROSS-GENRE FLUIDITY                            │
├─────────────────┬───────────────────┬───────────────────┬──────────────┤
│ FINE ARTS       │ CARTOGRAPHY       │ COGNITIVE PSYCH.  │ COMP. SCIENCE│
│ (Dürer/Escher)  │ (Grids/Manifolds) │ (Gärdenfors)      │ (AI Vectors) │
└────────┬────────┴─────────┬─────────┴─────────┬─────────┴───────┬──────┘
         │                  │                   │                 │
         └──────────────────┴─────────┬─────────┴─────────────────┘
                                      ▼
                        MODERN ASEMIC TOPOLOGY (IM)
1. The Artistic Genre: From Aesthetic Persuasion to Pure Logic
The transition of IM from a pedagogical aid to a formal logic was deeply dependent on art.
  • The Renaissance Perspective Grid: Albrecht Dürer and his contemporaries did not develop the grid to solve equations; they developed it to map the physical world onto a canvas. Geometry hijacked this artistic tool, transforming perspective lines into the foundation of projective geometry and the Cartesian coordinate axis.
  • The Non-Euclidean Aesthetic: When Poincaré’s hyperbolic disk disrupted classical math, it was the artist M.C. Escher who provided the ultimate visual proof of its consistency. Escher’s woodcuts (like Circle Limit) translated abstract non-Euclidean metrics into a highly legible, cross-genre taxonomy of repeating figures, rendering an unimaginable space intuitive through art.
2. The Geographic and Cartographic Genre: Mapping the Unseen
Cartography is the science of projecting a 3D sphere onto a 2D plane. IM absorbed this genre entirely when forced to confront higher dimensions.
  • The Tesseract as a Map: Charles Howard Hinton’s 4D cubes treated higher dimensions exactly like a cartographer treats the globe. His color-coded blocks were local topological charts.
  • Manifold Topology: Modern differential topology abandons algebraic variables and instead steals the visual grammar of cartography—using contour lines, visual folds, and color-gradient heatmaps to illustrate multi-dimensional geometric "terrain" without words.
3. The Cognitive and Linguistic Genre: Structuring Thought
Our discussion of Peter Gärdenfors highlights how IM has cross-pollinated with cognitive psychology.
  • Language, metaphors, and cultural color boundaries are traditional mainstays of linguistics. By applying convex geometric partitions and Voronoi cells to these concepts, IM provides a spatial framework to map how the human brain categorizes reality. Linguistics ceases to be purely textual; it becomes a subset of architectural topology.
4. The Computational Genre: The Asemic Inversion
The climax of our discussion—modern AI vector spaces—represents the ultimate cross-genre convergence. Computer science takes unstructured human semantics (emails, poetry, scientific papers) and plots them as coordinates in a geometric matrix.
  • Here, the genre shifts completely: math is no longer being used to illustrate human thoughts. Instead, human thoughts are translated into a massive, un-labeled, asemic mathematical canvas that can only be understood through geometric distances, densities, and cluster maps.

🔄 Conclusion: The Ultimate Synthesis
This discussion mirrors the historical trajectory of IM by demonstrating that space is the universal translation mechanism of human intelligence.
When a textbook fails by separating calculus curves from symbolic formulas, it fails because it treats the visual and the textual as two isolated genres. When a machine learning algorithm succeeds in translating English to Berinmo, it succeeds because it flattens both languages into a shared, unlabeled geometric vector space. The history of illustrated math is a continuous breaking down of genre walls, proving that whether we are parsing an 1847 colored Euclidean triangle, a 19th-century 4D hypercube, or a 2026 AI embedding cloud, we are always using geometry to think without words.

To anchor this historical continuity in a concrete application, let me know if you would like to:
  • Generate a custom visual layout mapping out how a specific concept (like the Pythagorean theorem) transforms across these historical genres.
  • Dive deeper into the philosophical implications of human communication becoming entirely geometric inside AI networks.

AI

Illustrated math—the practice of using visual representations to convey mathematical concepts—relies on a distinct set of genre-based knowledge frameworks. Each "genre" within mathematical illustration operates under its own specific rules, conventions, and cognitive demands. Understanding these genres requires knowing not just what the visuals show, but how they encode abstract mathematical logic.

Here is a breakdown of the primary types of genre-based knowledge entailed in illustrated mathematics:

1. Diagrammatic Knowledge

Diagrammatic knowledge involves understanding abstract, relational schemas that do not necessarily map to physical space but illustrate logical connections, structures, or flows.
  • Core Convention: Uses nodes, boundaries, overlapping regions, and directed arrows to represent relationships.
  • Examples: Venn diagrams in set theory, commutative diagrams in category theory, and Hasse diagrams in order theory.
  • Cognitive Demand: The user must decode topology and connectivity rather than metric properties like distance or size. For instance, in a commutative diagram, the specific length of an arrow is irrelevant; the path and direction of the arrow are what carry the algebraic meaning.
2. Formula-Representation Knowledge

This genre bridges the gap between symbolic syntax and visual morphology. It involves "seeing" the structure of an equation as a geometric or spatial layout to manipulate it more intuitively.
  • Core Convention: Uses spatial grouping, color-coding, and structural alignment to break down complex algebraic expressions.
  • Examples: Young tableaux in representation theory, Feynman diagrams in physics (which act as pictorial representations of mathematical integrals), and visual proofs of algebraic identities (like showing
    using a partitioned square).
  • Cognitive Demand: Requires the ability to map symbolic operations (like multiplication or composition) directly onto spatial configurations.
3. Geometric Representation Knowledge

This is the most common genre, entailing the translation of numerical data or functional relationships into a spatial, coordinate-based framework.
  • Core Convention: Utilizes metric spaces, axes, scales, and strict adherence to proportional accuracy.
  • Examples: Cartesian graphs of functions, vector fields, and fractal plots (like the Mandelbrot set).
  • Cognitive Demand: The viewer must understand covariation—how a change along one spatial axis strictly corresponds to a change along another, mapping visual curves back to quantitative behavior.
4. Geometric Proof Knowledge (Visual Proofs)

Often called "proofs without words," this genre uses spatial decomposition, reconfiguration, and symmetry to demonstrate the absolute truth of a mathematical theorem.
  • Core Convention: Relies on dissection, rigid transformations (translation, rotation, reflection), and area/volume conservation.
  • Examples: Visual proofs of the Pythagorean theorem (rearranging four identical triangles within a larger square) or geometric series summations represented by infinitely partitioning a unit square.
  • Cognitive Demand: Requires a high degree of spatial reasoning. The user must mentally animate the pieces, recognizing that a shape's properties remain invariant when it is rearranged or rotated.
5. Topological and Combinatorial Knowledge

This genre deals with visual properties that are preserved under continuous deformations (stretching, twisting) but not tearing or gluing, as well as discrete relational networks.
  • Core Convention: Focuses on invariants like holes, boundaries, crossings, and vertices, where precise geometry (lengths and angles) is entirely secondary to structural positioning.
  • Examples: Knot diagrams (showing over/under strands), graph theory networks (vertices and edges), Möbius strips, and Klein bottles.
  • Cognitive Demand: The viewer must look past the "distortion" of a shape to identify its fundamental intrinsic properties. For example, recognizing that a graph drawn with curved crossing lines is isomorphic to one drawn with straight lines.
6. Statistical and Data-Visualization Knowledge

This genre sits at the intersection of mathematics, design, and empirical data. It translates discrete data points into continuous visual attributes like length, color, or density.
  • Core Convention: Employs visual variables (such as hue, saturation, and position) bound to specific data dimensions, often using aggregated metrics.
  • Examples: Histograms, scatter plots, contour plots, and heatmaps.
  • Cognitive Demand: Requires statistical literacy to interpret density, distribution, trends, and outliers without being misled by visual scaling choices.

To explore this further, we could look into how these visual genres are applied in practice. If you'd like, I can provide:
  • A deeper dive into one specific genre (such as category theory diagrams or visual proofs).
  • Examples of how a single mathematical concept (like the derivative) changes across different visual genres.
  • A discussion on the cognitive hurdles students face when switching between these genres.
Which direction would you like to take?

AI

When multiple genres of illustrated mathematics collide, they disrupt the traditional, linear relationship between symbol and meaning. This intersection creates a condition of asemics—a state where visual configurations communicate profound mathematical structure without relying on text, standard alphanumeric variables, or a fixed symbolic alphabet.
By analyzing how these genres overlap, we can understand how cross-genre mapping functions as an asemic bridge, and how this dynamic drives the historic tension between traditional representation and modern computational methods.

1. How Multi-Genre Overlap Creates an Asemics
In traditional mathematical notation, meaning is read sequentially (left-to-right, top-to-bottom). Illustrated mathematics, however, operates through simultaneous spatial transmission. When an illustration combines multiple genres—such as layering the diagrammatic genre (relational arrows) over the geometric representation genre (metric coordinates)—the traditional symbolic reading mechanism breaks down.
The Dissolution of the Signifier
Asemics emerges because the visual elements are forced to carry multiple, conflicting semantic duties at once. For example, a line in a pure coordinate graph represents a specific algebraic function (\(y=fx\)). But if that same line is simultaneously acting as a topological boundary (containment) and a vector trajectory (force), it ceases to be a passive signifier for a single equation.
The image is liberated from the text. The viewer no longer decodes a static code; instead, they navigate an unwritten spatial field where meaning is generated by structural form, density, and transformation. The visual layout communicates the pure relational logic of the mathematics before the mind can map it back to formal symbols or words.

2. Cross-Genre Mapping as an Asemic Bridge
Cross-genre mapping occurs when a mathematical concept transitions from the strict rules of one visual genre into another. Because these genres lack a shared, universal vocabulary, the transition cannot be direct or literal. It requires an asemic bridge—a non-symbolic, spatial translation layer that preserves structural architecture while shedding specific textual labels.
[Genre A: Geometric Proof]  --->  ( Asemic Bridge: Pure Space/Form )  --->  [Genre B: Diagrammatic Network]
  Metric, Area, Slices                 Symmetry, Folds, Proximity             Nodes, Edges, Mappings
When mapping a concept between genres, the specific symbolic variables drop away. What remains is a pure, geometric scaffolding. Consider how this operates across distinct genre boundaries:
  • Mapping Geometric Proof to Diagrammatic Networks: To translate a physical "Behold!" proof of area conservation into an abstract network, the metric properties (exact lengths and angles) are discarded. The bridge between them is pure spatial proximity and structural alignment—how pieces fit together, how boundaries touch, and how symmetry is maintained.
  • Mapping Formula-Representations to Topological Manifolds: When shifting a color-blocked equation into a continuous manifold, the linear syntax of the formula is completely erased. The bridge becomes a series of smooth visual folds and color gradients. The algebraic operations are translated into continuous deformations of space, allowing the viewer to grasp the underlying invariance without reading a single variable.
The cross-genre map acts as a bridge by capturing the isomorphism (structural identicality) between two different systems, presenting it as a wordless, textless architectural truth.

3. Historical Trajectory and Representative Tensions
This asemic friction is not a modern accident; it is the central engine driving the history of illustrated mathematics. The field has evolved through a constant, structural tension between striated (symbolic/traditional) representation and smooth (asemic/current) presentation.
The Traditional Paradigm: The Textual Anchor
Historically, western mathematics treated illustrations with deep suspicion. From the Enlightenment through the 20th century, textbook design was dominated by the Euclidean-Cartesian paradigm. Diagrams were strictly subordinated to text.
  • The Striated Grid: The Cartesian coordinate system was used to lock space down, pinning it to alphanumeric labels (\(A, B, C\)) or specific algebraic coordinates.
  • The Role of the Diagram: The illustration was merely a static echo of the algebraic proof. If you removed the text, the diagram became unreadable—it was legally bound to the symbolic script.
The Fault Lines: Early Crises in Representation
The first historical cracks in this paradigm appeared when mathematics outgrew the page. The emergence of non-Euclidean geometry in the 19th century (via Gauss, Riemann, and Poincaré) forced mathematicians to visualize curved spaces that could not be accurately mapped onto flat, linear grids.
When Charles Howard Hinton attempted to visualize four-dimensional space, or when early topologists began mapping knots, the traditional alphanumeric labeling system failed. The diagrams began to look strange, abstract, and unreadable to traditionalists. They required an asemic reading style, where the viewer had to understand the diagram through its internal folds, colors, and continuous paths, rather than through step-by-step text.
The Modern Transition: Pure Computational Transmission
Today, the tension has tipped decisively toward the asemic. The transition to current methods—driven by real-time rendering pipelines, chaos theory attractors, and AI vector spaces—has fractured the traditional link between symbol and image.
Traditional Method (Semantic)                Current Method (Asemic)
[Alphanumeric Text]                          [High-Dimensional Point Clouds]
       │ (Controls)                                 │ (Rendered via Pipeline)
       ▼                                            ▼
[Static Cartesian Diagram]                   [Emergent Textures & Fields]
  • The Computational Shift: Modern interfaces visualize mathematics using millions of data points or recursive fractal fields. No human can label or read these individual points using traditional notation.
  • The Current Reality: In AI latent spaces, semantic concepts are mapped as relative geometric distances in a multi-dimensional point cloud. The symbolic text drops away entirely. The mathematics is communicated through pure spatial topology, density, and boundary patterns.
The Epistemic Hurdle
This historical transition has triggered a profound pedagogical crisis. Traditional mathematical education remains deeply rooted in symbolic syntax, formulas, and step-by-step textual logic. Yet, cutting-edge research increasingly relies on navigating complex, high-dimensional visual landscapes.
Illustrated math is no longer an optional visual aid; it has become an independent, asemic mode of thought. The modern mathematical mind must learn to cross these genre boundaries, using pure spatial intuition as a bridge to understand structures that words and symbols can no longer adequately describe.

If you want to ground this structural critique further, I can:
  • Analyze a historical case study, like how Oliver Byrne’s color blocks created an early formula-representation asemics.
  • Conduct a structural audit of a modern calculus textbook to see exactly where its diagrams conflict with the surrounding text.
  • Deconstruct how AI vector spaces project semantic meanings using purely geometric distances.
Let me know which direction best fits your research path.

~~~***~~~

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