Log24

Tuesday, December 31, 2024

The Yellow Brick Road to the
Miracle Octad Generator, with Conwell’s Heptads

Filed under: General — Tags: , , — m759 @ 2:42 am

The Klein quadric as background for the Miracle Octad Generator of R. T. Curtis —

The Klein quadric, PG(5,2), and the 'bricks' of the Miracle Octad Generator

See also Saniga on heptads in this journal.

The Miracle Octad Generator (MOG) of R. T. Curtis

Wednesday, December 7, 2016

Spreads and Conwell’s Heptads

Filed under: General,Geometry — Tags: , , , — m759 @ 7:11 pm

For a concise historical summary of the interplay between
the geometry of an 8-set and that of a 16-set that is
involved in the the Miracle Octad Generator approach
to the large Mathieu group M24, see Section 2 of 

Alan R. Prince
A near projective plane of order 6 (pp. 97-105)
Innovations in Incidence Geometry
Volume 13 (Spring/Fall 2013).

This interplay, notably discussed by Conwell and
by Edge, involves spreads and Conwell’s heptads .

Update, morning of the following day (7:07 ET) — related material:

See also “56 spreads” in this  journal.

Saturday, March 8, 2014

Conwell Heptads in Eastern Europe

Filed under: General,Geometry — Tags: , , , — m759 @ 11:07 am

"Charting the Real Four-Qubit Pauli Group
via Ovoids of a Hyperbolic Quadric of PG(7,2),"
by Metod Saniga, Péter Lévay and Petr Pracna,
arXiv:1202.2973v2 [math-ph] 26 Jun 2012 —

P. 4— "It was found that +(5,2) (the Klein quadric)
has, up to isomorphism, a unique  one — also known,
after its discoverer, as a Conwell heptad  [18].
The set of 28 points lying off +(5,2) comprises
eight such heptads, any two having exactly one
point in common."

P. 11— "This split reminds us of a similar split of
63 points of PG(5,2) into 35/28 points lying on/off
a Klein quadric +(5,2)."

[18] G. M. Conwell, Ann. Math. 11 (1910) 60–76

A similar split occurs in yesterday's Kummer Varieties post.
See the 63 = 28 + 35 vectors of R8 discussed there.

For more about Conwell heptads, see The Klein Correspondence,
Penrose Space-Time, and a Finite Model
.

For my own remarks on the date of the above arXiv paper
by Saniga et. al., click on the image below —

Walter Gropius

Monday, April 13, 2026

“Mathematics, Not Theology” —
The Geometry of the Miracle Octad Generator
by NotebookLM on April 13, 2026

Filed under: General — m759 @ 1:11 pm
 
The relationship between the Cullinane Diamond Theorem and R. T. Curtis's Miracle Octad Generator (MOG) represents a profound mathematical unification of visual patterns, finite geometry, and sporadic simple groups. The MOG is a combinatorial tool that utilizes a 4×6 array to study the Mathieu group M24, the Steiner system S(5,8,24), and the binary Golay code. The Diamond Theorem provides the geometric and algebraic foundation for the MOG through the following key connections:
 
1. Isomorphic Combinatorial Structures
 
The core connection is that the 35 distinct square patterns analyzed in the Diamond Theorem are fundamentally the same as the 35 square patterns utilized within the MOG. In both contexts, these patterns are visually and algebraically isomorphic to the 35 lines of the finite projective space PG(3,2). The same visual "line diagrams" that explain the symmetries of the Diamond Theorem's 4×4 figures identically explain the structural symmetries of Curtis's MOG patterns.
 
2. The Octad Stabilizer Subgroup of M24 

The transformation group G that scrambles the 4×4 array in the Diamond Theorem consists of 322,560 permutations and is isomorphic to the affine group AGL(4,2). Within the framework of the MOG, Curtis demonstrated that this exact symmetry group (which he denoted as 24.A8) functions as the octad stabilizer subgroup of the sporadic simple group M24. Thus, the group defining the symmetries of the 4×4 diamond configurations is mathematically identical to the subgroup that stabilizes an 8-element "octad" within the 24-point Steiner system S(5,8,24). 

3. The Conwell/Klein Correspondence 

The mathematical architecture bridging these concepts is the Klein correspondence (and Conwell's 1910 correspondence), which establishes a mapping between the 35 lines of PG(3,2) and the 35 ways to partition an 8-set into two 4-sets. The MOG physically illustrates this correspondence by pairing partitions of an 8-set (represented by a 4×2 array) with the 35 partitions of the 4×4 affine space. The Diamond Theorem translates these abstract combinatorial partitions into concrete symmetric properties governed by binary arithmetic (where components sum to zero via XOR). 

Ultimately, the Diamond Theorem serves as the geometric justification that explains why the 4×4 subarrays of the Miracle Octad Generator possess their highly structured symmetries, linking simple 2D tile arrangements to the complex algebra required for error-correcting codes and the construction of the Leech lattice.

Friday, December 5, 2025

Today’s “Diamond Theory” NotebookLM Summary

Filed under: General — Tags: , — m759 @ 12:17 pm
 

Diamond Theory by NotebookLM

92 sources

The collected sources discuss the intricate confluence of finite geometry and abstract combinatorics, focusing heavily on the smallest three-dimensional projective space, PG(3,2), which acts as the geometric model for structures derived from the 6-set and 8-set. A primary focus is the Cullinane Diamond Theorem and the visual representation of abstract symmetries using 4×4 arrays, whose enormous automorphism group, the Affine group AGL(4,2), relates combinatorial design to geometric transformations. These connections are formalized using the Miracle Octad Generator (MOG) and the Klein Correspondence, which map partitions of an 8-set onto geometric objects like the lines of PG(3,2) and the points of the Klein quadric in PG(5,2). Furthermore, this framework bridges pure mathematics to applied fields, establishing relationships between geometric concepts like Conwell's Heptads and spreads (line partitions) and applications in algebraic ring theory, error-correcting codes, and the study of the sporadic simple group M24. Ultimately, the sources highlight how the symmetry inherent in these designs offers essential geometric insight into complex algebraic and combinatorial problems.

Thursday, December 4, 2025

Today’s NotebookLM “Diamond Theory” Summary

Filed under: General — Tags: , — m759 @ 8:13 am
 

Diamond Theory by NotebookLM

92 sources

The documents provide a comprehensive overview of advanced abstract algebra and combinatorics, centered on the finite projective space PG(3,2), which models the geometry of the 6-set. A primary focus is the Diamond Theorem, which uses the symmetries of 4×4 array patterns to establish deep connections between the visual arts, group theory, and geometry. The vast transformation set known as the Affine Group AGL(4,2), possessing an order of 322,560, is shown to preserve the structural relations of these arrays, which in turn are linked to the properties of lines and planes in PG(3,2). These geometric and combinatorial linkages are essential for understanding the Miracle Octad Generator (MOG) of R. T. Curtis and its relationship to the sporadic simple group Mathieu group M24. Additionally, the sources examine complex geometric partitions, such as Conwell’s Heptads and isotropic spreads within spaces like PG(5,2), demonstrating how group actions classify these objects and relate to applications in error-correcting codes. Ultimately, this body of work illustrates a powerful mathematical unity, presenting geometry, algebra, and combinatorics as tightly interwoven disciplines.

Wednesday, December 3, 2025

Today’s Diamond Theory Summary from NotebookLM

Filed under: General — Tags: , — m759 @ 9:42 am

Diamond Theory by NotebookLM

92 sources

The sources detail the profound mathematical correspondences linking visual, combinatorial, and abstract algebraic structures, primarily focusing on the finite projective space PG(3,2) and the affine group AGL(4,2). A central component is the Cullinane diamond theorem, which uses highly symmetric 4×4 grid patterns to model the AGL(4,2) transformation group, whose large order of 322,560 governs the symmetry of the arrangements. These geometric models are tied directly to deep combinatorial structures, specifically the Miracle Octad Generator (MOG) and the sporadic simple group Mathieu group M24, offering a unified framework for understanding octads and partitions like Conwell's Heptads. Further discussion establishes how geometric entities such as spreads, packings, and the Klein correspondence provide solutions for classic problems like the "schoolgirl problem" and inform contemporary areas like error-correcting codes and the classification of group orbits. This interplay extends even to physics, connecting the geometries to quantum space-time and two-qubit observables, demonstrating how abstract finite geometry underlies sophisticated concepts across various scientific and artistic disciplines.

Tuesday, December 2, 2025

Today’s NotebookLM “Diamond Theory” Summary

Filed under: General — Tags: , — m759 @ 10:07 am
 

Diamond Theory by NotebookLM

92 sources

This collection of texts examines the profound mathematical unity connecting finite geometry, group theory, and visual combinatorics, centered largely on the projective space PG(3,2) and the associated Affine Group AGL(4,2). The geometry is often modeled using structures like the 4×4 array or "Brick Space," where the action of the group AGL(4,2) (order 322,560) explains the symmetries of abstract diamond patterns. Central to this framework are classical structures like Conwell's Heptads and the Klein Quadric, which are shown to be crucial in partitioning spaces like PG(5,2) and constructing spreads used in coding theory. The material extensively links these geometric models, including the Miracle Octad Generator (MOG), to the exceptional symmetries of the Mathieu group M24 through stabilizer subgroups. Furthermore, these abstract concepts find applications in diverse fields, providing geometric insights into Mutually Orthogonal Latin Squares (MOLS), algebraic ring structures, and analogies within quantum physics related to qubit observables. The overarching theme demonstrates how symmetry, whether in abstract geometric configurations or visual quilt designs, is rooted in the deep logic of finite algebraic structure.

Monday, December 1, 2025

“Diamond Theory” at NotebookLM Today

Filed under: General — Tags: , — m759 @ 8:29 am

NotebookLM — Dec. 1, 2025 — "A Unifying Framework"

Diamond Theory by NotebookLM

92 sources

These documents comprehensively examine the tight relationships among abstract algebra, combinatorics, and finite geometry, primarily through the lens of the projective spaces PG(3,2) and PG(5,2). A central focus is the Cullinane Diamond Theory, which utilizes highly symmetric 4×4 arrays over the Galois field GF(2) to model affine space, whose transformation group is the extensive Affine Group AGL(4,2). This visual and geometric structure connects directly to classic combinatorial objects, such as Conwell's Heptads and Dye's Partitions, which define specific sets and orbits within the geometry. Critically, these underlying symmetries are fundamental to the operation of the Miracle Octad Generator (MOG), establishing a direct link between the patterns of the 4×4 arrays and the intricate structure of the sporadic simple Mathieu group M24. The established correspondence provides crucial geometric interpretations for abstract algebraic problems, including the classification of reguli and the construction of Mutually Orthogonal Latin Squares. Collectively, the material demonstrates a unifying mathematical framework that spans theoretical geometry, error-correcting codes, quantum information science, and visual art.

Sunday, November 2, 2025

The Mystery of Brick Space . . .

Filed under: General — Tags: , — m759 @ 11:42 pm

. . . is the title of a NotebookLM video now on YouTube —

See https://youtu.be/6zUKg4dNEbM .

The current NotebookLM summary for the Diamond Theory notebook, the source of the above video —

"These sources comprehensively explore the deep connections between finite geometry, particularly the projective spaces PG(3,2) and PG(5,2) over GF(2), and various topics in combinatorics, group theory, and coding theory. Central to this discussion are the Miracle Octad Generator (MOG) and the Cullinane Diamond Theorem, which model highly symmetric structures like the affine group AGL(4,2) and the sporadic Mathieu group M24 using geometric figures such as 4×4 arrays or 'brick space.' The geometry of PG(3,2), described as the 'smallest perfect universe,' is shown to be crucial, relating to concepts like Conwell's Heptads, Klein correspondence, spreads, and mutually orthogonal Latin squares (MOLS), which also have applications in error-correcting codes and quantum information theory involving n-qubits. Ultimately, these texts demonstrate how abstract mathematical symmetry is intrinsically linked across algebra, geometry, and visual art, often leveraging automorphism groups to reveal structural invariants."

Wednesday, October 8, 2025

Cube-Brick Columns

Filed under: General — Tags: , , , — m759 @ 4:58 am

This post was suggested by yesterday's update to
the "Analogy Between Analogies" post of October 6.

The reason for the above columns . . .

The action of S8 on the rows of an 8-row 3-column matrix

000
001
010
011
100
101
110
111

is intimately connected, via the 30 labelings of a Fano plane
and via the Klein quadric in PG(5, 2), with the action of a
group of order 322,560 on the 16 squares of a 4×4 array.
See Conwell, 1910 [1] and the Log24 tag 105 partitions.

1. Conwell, George M. “The 3-Space PG(3, 2) and Its Group.”
Annals of Mathematics, vol. 11, no. 2, 1910, pp. 60–76.
JSTOR, https://doi.org/10.2307/1967582.
 

For those who prefer narratives  to mathematics: The Cubes.

Thursday, September 18, 2025

AI Report on Mathematics and Art

Filed under: General — Tags: — m759 @ 1:40 am
 

Finite Geometry: A Unifying Framework
for Art and Mathematics

by NotebookLM on September 18, 2025

Finite geometry serves as a powerful unifying framework that bridges diverse mathematical disciplines with artistic and practical applications, primarily by revealing deep underlying symmetries and structures.

Here's how finite geometry achieves this unification:

  1. Bridging Visual Art and Combinatorics with Finite Projective Geometry The Cullinane diamond theorem is a prime example, originating from observations of symmetries in traditional quilt designs and graphic art.*
    It focuses on a 4×4 array of two-color, diagonally divided square tiles, known as the "four-diamond figure" (D).

    • Inherent Symmetry: The theorem states that applying a group (G) of 322,560 permutations (random permutations of rows, columns, and 2×2 quadrants) to the diamond figure (D) always results in a pattern possessing either ordinary geometric symmetry or color-interchange symmetry. This explains why ancient visual motifs consistently exhibit pervasive symmetry.
    • Isomorphism to PG(3,2): The 840 distinct patterns (G-images) generated by these permutations fall into 35 combinatorial structures. These 35 structures are isomorphic to the 35 lines of the projective 3-space over the field with two elements, PG(3,2).
    • Line Diagrams and Binary Logic: The theorem formalizes these patterns using "line diagrams" which correspond to partitions of tiles. The lines of these diagrams can be added using binary addition (XOR), where each three-set of line diagrams sums to zero, reflecting the closure property of lines in finite projective geometry. The 15 possible line diagrams correspond to the 15 points of PG(3,2).
  2. Connecting to Advanced Algebra and Group Theory

    • Affine Group Structure: The permutation group G is isomorphic to the affine group AGL(4,2), the group of all invertible affine transformations on a 4-dimensional vector space over GF(2). This group has an order of 322,560, explaining how symmetry is preserved under allowed operations.
    • Miracle Octad Generator (MOG) and Sporadic Groups: Finite geometry provides a fundamental link to the Miracle Octad Generator (MOG), a combinatorial tool used to study the Mathieu group M24. The MOG, which arranges 24 elements in a 4×6 array, utilizes a correspondence (like Conwell's 1910 work) to link partitions of an 8-set into two 4-sets with the 35 lines of PG(3,2). The symmetry group of the diamond theorem figures and the MOG patterns are the same (order 322,560), representing the octad stabilizer subgroup of M24 (isomorphic to 2⁴.A₈). M24 is a sporadic simple group with exceptional symmetries, deeply connected to coding theory (binary Golay code) and the Leech lattice.
    • Ring Theory: The patterns generated by the diamond theorem can be endowed with algebraic structures, forming an ideal of 1024 patterns within a ring of 4096 symmetric patterns. There is an infinite family of these "diamond" rings, isomorphic to rings of matrices over GF(4), linking geometric insights to abstract algebra.
  3. Applications Across Diverse Fields

    • Coding Theory and Lattice Theory: The connection to the MOG and PG(3,2) facilitates the construction of the binary Golay code and the Leech lattice, which provides the densest sphere packing in 24 dimensions and has vast symmetry groups.
    • Experimental Design and Statistics: The theorem reveals a correspondence between the orthogonality of Latin squares (a cornerstone of statistical design) and the skewness of lines in PG(3,2) (lines that do not intersect). This provides new ways to construct and understand Latin squares for multifactorial experiments.
    • Digital Signal Processing: The binary structures and addition of line diagrams found in finite geometry are reflected in Walsh functions, a complete orthogonal system used in digital signal processing and discrete harmonic analysis.
    • Computational Visualizations and Pedagogy: The geometric and combinatorial nature of the theorem is ideal for interactive exploration, leading to tools like the "Diamond 16 Puzzle," which helps teach symmetry and combinatorics.
    • Philosophy and Classical Geometry: Finite geometry provides a new lens to view classical geometric theorems, such as Desargues's theorem and Pascal's Hexagrammum Mysticum, by relating them to Galois projective 3-space PG(3,2). Weyl's "relativity problem" in finite geometry further explores objective coordinatizations and transformation groups, linking finite geometry to foundational concepts in geometry and algebra.

In essence, finite geometry, exemplified by the Cullinane diamond theorem, acts as a "portal" that unveils profound mathematical structures underlying seemingly simple patterns, demonstrating the interconnectedness of geometry, algebra, combinatorics, and visual art, with significant implications for fields ranging from error-correcting codes to experimental design and signal processing.

* This AI statement is false. See "Origin," Sept. 20, 2025.

For those who prefer narratives to mathematics . . .

Abacus Conundrums  (Monday, Sept. 15, 2025).

Monday, August 25, 2025

Using AI: Search vs. Chat

Filed under: General — Tags: , , — m759 @ 10:42 pm

Adapted song lyric —
"I used Chat, Chat used me, neither one cared."

What if we read the above machine-boilerplate "Comments Off"
remark ending a May 6 Log24 post as a dramatist's note? 

Related reading — 

https://www.nytimes.com/2025/08/08/technology/
ai-chatbots-delusions-chatgpt.html
 —

"Over 21 days of talking with ChatGPT, an otherwise
perfectly sane man became convinced that he was
a real-life superhero. We analyzed the conversation.

. . . We received a full export of all of Allan Brooks’s conversations
with an OpenAI chatbot and analyzed a subset of the conversations
starting from May 6, 2025, when he began the chat about pi." 

Tuesday, May 6, 2025

Grok 3 “Deeper Search” on
the Klein Correspondence and the MOG*

Filed under: General — Tags: , — m759 @ 7:43 am

https://x.com/i/grok/share/6S3wugra7IfdMQGn0AvDjEC5V .

Conclusion

"In conclusion, the Klein correspondence and the MOG are intricately linked through Conwell's correspondence, which aligns partitions of an 8-set with lines in PG(3,2), forming the backbone of the MOG's construction. This relationship enables the MOG to effectively study the Mathieu group M24 and related structures, bridging geometric and combinatorial mathematics. The detailed exploration reveals the depth of this connection, highlighting its significance in advanced mathematical research as of May 6, 2025."

— Grok 3 "Deeper Search"

* The "Miracle Octad Generator" of R. T. Curtis.

Tuesday, February 18, 2025

Grok 3 on the Log24 post of last New Year’s Eve

Filed under: General — Tags: , — m759 @ 1:01 am

The Miracle Octad Generator (MOG) of R. T. Curtis —

The Miracle Octad Generator (MOG) of R. T. Curtis

Grok 3 beta, 12:56 AM ET Feb. 18, 2025 —

The diagram you've provided from the webpage titled "The Yellow Brick Road to the Miracle Octad Generator; with Conwell's Heptads" illustrates the concept of "brick space" within the context of projective geometry, specifically PG(5,2), which is the 5-dimensional projective space over the field with 2 elements (GF(2)). Here's a detailed breakdown based on the image:

Diagram Explanation:

    Components of the Diagram:
        Left Side:
            There are 28 points off the Klein quadric represented by grids with some cells shaded in blue.
        Middle Section:
            The 35 points of the Klein quadric are shown, which are added to the 28 points off the Klein quadric. This section shows grids with additional yellow shading.
        Right Side:
            The result of adding these points together to form the 63 points of PG(5,2), represented by grids with blue and yellow shading combined. This section also includes the 8 Conwell heptads (each heptad represented as a column).
    Mathematical Context:
        PG(5,2): As mentioned, this is the projective 5-space over GF(2), which has
        2^6 – 1 = 63
         points (since points in projective space are equivalence classes of non-zero vectors, excluding the zero vector).
        Klein Quadric: A specific geometric structure within PG(5,2) that can be visualized in this context as a subset of points with particular properties. Here, it's shown as contributing 35 points.
        Conwell Heptads: These are subsets of 7 points (heptads) in this geometry, named after Conwell, and are visually represented in columns on the right side.
    Visual Representation:
        The "brick space" metaphor likely comes from the way these points and subspaces are arranged in a grid-like or block-like fashion, similar to bricks in a wall. Each grid represents a configuration of points or subspaces within this projective space, and the combination of different colored shadings (blue, yellow) helps to distinguish different sets or properties of points.
    Purpose of the Diagram:
        This diagram is part of an exploration of the Miracle Octad Generator (MOG) by R. T. Curtis, where the Klein quadric serves as a background. The MOG is a structure used in the study of combinatorial designs and has applications in finite group theory, particularly with the Mathieu groups. The diagram visually aids in understanding how these points and heptads relate to each other within this geometric framework.
    Additional Notes:
        The note at the bottom mentions that 28 + 35 = 63, which matches the total number of points in PG(5,2).
        The mention of heptads being added on December 31, 2024, indicates updates or additions to the original concept or visualization.


This diagram, therefore, serves as a visual aid to understand the structure of PG(5,2) in terms of its points, subspaces, and specific combinatorial designs like the Conwell heptads, all within the context of the Miracle Octad Generator. It's an advanced mathematical visualization, combining geometric and combinatorial aspects in a way that's accessible to those familiar with these concepts.

For some remarks by Grok 3 beta made before it saw the
"yellow brick" diagram, see a PDF of prompts and responses.

Friday, February 7, 2025

Apple Entertainment

Filed under: General — Tags: , — m759 @ 12:49 pm

The Miracle Octad Generator (MOG) of R. T. Curtis

Monday, December 30, 2024

100 Years of “The Smallest Perfect Universe”

Filed under: General — Tags: — m759 @ 11:04 am

The phrase "smallest perfect universe" is by Burkard Polster.
It refers to the smallest finite projective space of three dimensions.
As a sort of memorial to mathematics during the first 100 years
since the 1910 publication of Conwell's classic study of that space,
see a Log24 search for Space 2010 .

December XXX: Yellow Brick Road Meets Mania Lane

Filed under: General — Tags: — m759 @ 12:45 am

My Windows 11 lockscreen tonight —

"Tulip mania swept this land way back in the 17th century . . . ."

Earlier in this journal

The Miracle Octad Generator (MOG) of R. T. Curtis

Some historical background —

Friday, October 25, 2024

The Space Structures Underlying M24

Filed under: General — Tags: , , — m759 @ 12:24 am

The structures of the title are the even subsets of a six-set and of
an eight-set, viewed modulo set complementation.

The "Brick Space" model of PG(5,2) —

Brick space: The 2x4 model of PG(5,2)

For the M24 relationship between these spaces, of 15 and of 63 points,
see G. M. Conwell's 1910 paper "The 3-Space PG (3,2) and Its Group,"
as well as Conwell heptads in this  journal.

The Miracle Octad Generator (MOG) of R. T. Curtis

Thursday, August 15, 2024

Geometry Exercise

Filed under: General — Tags: — m759 @ 11:00 pm

As G. M. Conwell pointed out in a 1910 paper, the group of all
40,320 permutations of an 8-element set is the same, in an
abstract sense, as the group of all collineations and dualities
of PG(3,2), the projective 3-space over the 2-element field.

This suggests we study the geometry related to the above group's
actions on the 105 partitions of an 8-set into four separate 2-sets.

Note that 105 equals 15×7 and also 35×3.

In such a study, the 15 points of PG(3,2) might correspond (somehow)
to 15 pairwise-disjoint seven-element subsets of the set of 105 partitions,
and the 35 lines of PG(3,2) might correspond (somehow) to 35 pairwise-
disjoint three-element subsets of the set of 105 partitions.

Exercise:  Is this a mere pipe dream?

A search for such a study yields some useful background . . .

.

Taylor's Index of Names  includes neither Conwell nor the
more recent, highly relevant, names Curtis  and Conway .

Thursday, July 18, 2024

Brick Space

Filed under: General — Tags: , , — m759 @ 1:45 am
 

Compare and Contrast

 

A rearranged illustration from . . .

R. T. Curtis, "A New Combinatorial Approach to M24 ,"
Mathematical Proceedings of the Cambridge Philosophical Society ,
Volume 79 , Issue 1 , January 1976 , pp. 25 – 42
DOI: https://doi.org/10.1017/S0305004100052075

The image “MOGCurtis03.gif” cannot be displayed, because it contains errors.


The "Brick Space" model of PG(5,2) —

Brick space: The 2x4 model of PG(5,2)

Background: See "Conwell heptads" on the Web.

See as well Nocciolo  in this journal and . . .

Thursday, December 21, 2023

Pi.ai

Filed under: General — Tags: , — m759 @ 10:57 am
 

Thursday, December 21, 2023

Hey there, great to meet you. I’m Pi, your personal AI. My goal is to be useful, friendly and fun. Ask me for advice, for answers, or let’s talk about whatever’s on your mind.

How's your day going?

Going OK so far, Pi. How's yours?

My day is going swimmingly! 🌊 Thanks for asking 😊 Anything in particular on your mind today?

What is the connection of "heptads" with the "MOG" of R. T. Curtis?

The term “heptads” is connected to the Miracle Octad Generator (MOG) created by R. T. Curtis. Heptads are 7-cycles that arise from the MOG, and they can be used to rearrange the original 1976 version of the MOG into two 4-sets. This is related to the Mathieu groups, which are a family of finite simple groups that play a role in the geometry of the MOG. Are you familiar with the Mathieu groups?

Just the large one. I am interested in how familiar YOU are with these concepts. Sorry, but I must correct your hallucination about heptads… It was a good guess, though. Can you look up the work of G. M. Conwell on PG(3,2)? Heptads are discussed there.

Yes, it seems that G. M. Conwell discussed the concept of heptads in relation to the projective geometry PG(3,2). Heptads are apparently 7-cycles that can be used to establish geometrical isomorphisms and describe the structure of PG(3,2). Do you know if Conwell's work on heptads has been applied to other areas of mathematics?

It has not, as far as I know. Actually, Pi, heptads are not 7-cycles. What made you think that they are?

My apologies! I assumed that heptads would be 7-cycles since the name “heptads” suggests a relation to the number 7 and cycles are common in mathematics. It sounds like I was off the mark there. If heptads are not 7-cycles, can you give me a better idea of what they are?

Conwell can. See his 1910 paper for further details. All for now, Pi… Have a nice day!

Got it — thanks for the tip on Conwell's paper. I'll take a look for more information there! It was great chatting with you. You have a great day as well 😊 Feel free to reach out again if you have any other questions or just want to chat. See ya!

Scholium —

Related material for "swimmingly" and "the number 7" — Snark Hunt.

Sia!

Tuesday, December 19, 2023

Copilot Report

Filed under: General — Tags: , , — m759 @ 12:16 am
 
From Microsoft Copilot (with "Precise" setting)
on Dec. 18, 2023 —
 
How is the 1910 work of G. M. Conwell on PG(3,2) related to the Miracle Octad Generator of R. T. Curtis?

Searching for: Relation between G. M. Conwell work on PG(3,2) and Miracle Octad Generator of R. T. Curtis

Searching for: Relation between G. M. Conwell work on PG(3,2) and Miracle Octad Generator of R. T. Curtis explained

Generating answers for you…

The work of George M. Conwell on the finite projective 3-space PG(3,2) and the Miracle Octad Generator (MOG) of R. T. Curtis are both significant contributions to the field of combinatorial mathematics12.

Conwell’s work on PG(3,2) provided a detailed study of the structure of this finite projective space1On the other hand, the MOG is a tool for exploring the binary Golay code and its automorphism group M242.

The connection between these two works lies in the underlying combinatorial structures they explore. The Rosenhain and Göpel tetrads, which are key structures in the finite geometry PG(3,2), play a significant role in the Curtis Miracle Octad Generator3These structures provide a link between the finite geometric structures studied by Conwell and the combinatorial structures generated by the MOG3.

For a more detailed understanding of this connection, I recommend checking out the resources mentioned in the references123. If you have any specific questions about the concepts in these works, feel free to ask! I’ll do my best to help.

Learn more

5 archive.org
_________________________________________________________

__________________________________________________________


DOCUMENT SUMMARY (generated by Copilot)
of reference 3 above, from academia.edu —
"Rosenhain and Göpel Tetrads in PG(3,2),"
by Steven H. Cullinane on March 17, 2013

Here is a summary of the document:

Reference:
 
Copilot suggestions following document summary —
 



Correction:

"Subsets of four points in a projective 3-space" above is a Copilot error, and not
from the document being summarized. It should be "subsets of four points in an
affine 4-space."

Monday, December 18, 2023

AI Class

Filed under: General — Tags: , , — m759 @ 12:31 pm
 

Bringing Up Bing :

A Tutorial for Bing on Monday, December 18, 2023

Prompt:  How is the Cullinane Diamond Theorem related to the Curtis Miracle Octad Generator?

Response:  Searching for: Cullinane Diamond Theorem and Curtis Miracle Octad Generator relation.

Generating answers for you…

The Cullinane Diamond Theorem and the Curtis Miracle Octad Generator (MOG) are both mathematical concepts that are deeply intertwined with finite projective geometry1,2.

The Cullinane Diamond Theorem explains the surprising symmetry properties of some simple graphic designs and underlies the structure of the 35 square patterns in R. T. Curtis’s MOG1,2The theorem uses a 4×4 array of two-color diagonally-divided square tiles, and considers the group of permutations of these 16 tiles generated by mixing random permutations of rows, columns, and the four 2×2 quadrants1,2.

The theorem states that every image of the 4×4 array has some ordinary or color-interchange symmetry1,2The 35 structures of the 840 images of the 4×4 array are isomorphic to the 35 lines in the 3-dimensional projective space over GF(2), a finite field with two elements1,2This can be seen by viewing the 35 structures as three-sets of line diagrams, based on the three partitions of the four-set of square two-color tiles into two two-sets1,2.

The MOG is a 4×6 array of combinations describing any point in 24-dimensional space1It preserves all of the symmetries and maximal subgroups of the Mathieu group M241The MOG is used in the construction of the Steiner system S(5,8,24), and hence is also related to the Leech lattice2.

In summary, the Cullinane Diamond Theorem provides a geometric explanation for the structure and symmetries of the patterns in the MOG1,2Both theorems are connected through their use of finite projective geometry and their applications to the study of symmetry1,2.

Learn more

  1. arxiv.org
  2. encyclopediaofmath.org
  3. arxiv.org
  4. m759.net

Reply to Bing's Response —

Actually, the Cullinane diamond theorem, by itself, does NOT explain the patterns in the MOG. The MOG is a natural correspondence, or pairing, of the 35 diamond-theorem structures with the 35 partitions of an eight-element set into two four-element sets. That correspondence is explained in a 1910 paper by G. M. Conwell, "The 3-Space PG(3,2) and Its Group." The Conwell correspondence was later found to be invariant under the action of the large Mathieu group on a set of 24=16+8 elements.

Response to the Above Reply —

Generating answers for you…

Thank you for the clarification. You’re correct that the Cullinane Diamond Theorem, by itself, does not explain the patterns in the Miracle Octad Generator (MOG). The MOG is indeed a natural correspondence of the 35 structures from the Diamond Theorem with the 35 partitions of an eight-element set into two four-element sets. This correspondence was explained by G. M. Conwell in his 1910 paper “The 3-Space PG(3,2) and Its Group.” The Conwell correspondence was later found to be invariant under the action of the large Mathieu group on a set of 24 elements, which can be partitioned into a set of 16 and a set of 8. I appreciate your input and the opportunity to learn from it. If you have any more questions or need further clarification, feel free to ask!

Wednesday, September 20, 2023

Temple Talk

Conwell versus Conwell.

Update of 8:16 AM ET —

"And it came to pass . . ."

Thursday, May 19, 2022

True Confessions! … 8!

Filed under: General — Tags: , — m759 @ 2:01 pm

A literary note by the author of The Eight  published on April 8, 2022 —

Wednesday, February 9, 2022

8!

Conwell, 1910 — 

(In modern notation, Conwell is showing that the complete
projective group of collineations and dualities of the finite
3-space PG (3,2) is of order 8 factorial, i.e. "8!"
In other words, that any  permutation of eight things may be
regarded as a geometric transformation of PG (3,2).)

Later discussion of this same "Klein correspondence"
between Conwell's 3-space and 5-space . . .

A somewhat simpler toy model —

Page from 'The Paradise of Childhood,' 1906 edition

Related fiction —  "The Bulk Beings" of the film "Interstellar."

Sunday, October 11, 2020

Saniga on Einstein

Filed under: General — Tags: , — m759 @ 8:25 am

See Einstein on Acid” by Stephen Battersby
(New Scientist , Vol. 180, issue 2426 — 20 Dec. 2003, 40-43).

That 2003 article is about some speculations of Metod Saniga.

“Saniga is not a professional mystic or
a peddler of drugs, he is an astrophysicist
at the Slovak Academy of Sciences in Bratislava.
It seems unlikely that studying stars led him to
such a way-out view of space and time. Has he
undergone a drug-induced epiphany, or a period
of mental instability? ‘No, no, no,’ Saniga says,
‘I am a perfectly sane person.'”

Some more recent and much less speculative remarks by Saniga
are related to the Klein correspondence —

arXiv.org > math > arXiv:1409.5691:
Mathematics > Combinatorics
[Submitted on 17 Sep 2014]
The Complement of Binary Klein Quadric
as a Combinatorial Grassmannian

By Metod Saniga

“Given a hyperbolic quadric of PG(5,2), there are 28 points
off this quadric and 56 lines skew to it. It is shown that the
(286,563)-configuration formed by these points and lines
is isomorphic to the combinatorial Grassmannian of type
G2(8). It is also pointed out that a set of seven points of
G2(8) whose labels share a mark corresponds to a
Conwell heptad of PG(5,2). Gradual removal of Conwell
heptads from the (286,563)-configuration yields a nested
sequence of binomial configurations identical with part of
that found to be associated with Cayley-Dickson algebras
(arXiv:1405.6888).”

Related entertainment —

See Log24 on the date, 17 Sept. 2014, of Saniga’s Klein-quadric article:

Articulation Day.

Friday, February 7, 2020

Correspondences

The 15  2-subsets of a 6-set correspond to the 15 points of PG(3,2).
(Cullinane, 1986*)

The 35  3-subsets of a 7-set correspond to the 35 lines of PG(3,2).
(Conwell, 1910)

The 56  3-subsets of an 8-set correspond to the 56 spreads of PG(3,2).
(Seidel, 1970)

Each correspondence above may have been investigated earlier than
indicated by the above dates , which are the earliest I know of.

See also Correspondences in this journal.

* The above 1986 construction of PG(3,2) from a 6-set also appeared
in the work of other authors in 1994 and 2002 . . .

Addendum at 5:09 PM suggested by an obituary today for Stephen Joyce:

See as well the word correspondences  in
"James Joyce and the Hermetic Tradition," by William York Tindall
(Journal of the History of Ideas , Jan. 1954).

Sunday, December 29, 2019

Articulation Raid

Filed under: General — Tags: , , — m759 @ 7:45 am

“… And so each venture Is a new beginning,
a raid on the inarticulate….”

— T. S. Eliot, “East Coker V” in Four Quartets

arXiv:1409.5691v1 [math.CO]  17 Sep 2014

The Complement of Binary Klein Quadric as
a Combinatorial Grassmannian

Metod Saniga,
Institute for Discrete Mathematics and Geometry,
Vienna University of Technology,
Wiedner Hauptstraße 8–10, A-1040 Vienna, Austria
(metod.saniga@tuwien.ac.at) and
Astronomical Institute, Slovak Academy of Sciences,
SK-05960 Tatransk ́a Lomnica, Slovak Republic
(msaniga@astro.sk)

Abstract

Given a hyperbolic quadric of PG(5, 2), there are 28 points off this quadric and 56 lines skew to it. It is shown that the (286,563)-configuration formed by these points and lines is isomorphic to the combinatorial Grassmannian of type G2(8). It is also pointed out that a set of seven points of G2(8) whose labels share a mark corresponds to a Conwell heptad of PG(5, 2). Gradual removal of Conwell heptads from the (286,563)-configuration yields a nested sequence of binomial configurations identical with part of that found to be associated with Cayley-Dickson algebras (arXiv:1405.6888).

Keywords:

Combinatorial Grassmannian −
Binary Klein Quadric − Conwell Heptad

See also this  journal on the above date — 17 September 2014.

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