Log24

Saturday, January 24, 2026

Eightfold Cube AI Overview

Filed under: General — Tags: — m759 @ 2:41 pm

From the current New Yorker,
a link for Katherine Neville —

https://www.newyorker.com/cartoon/a25783 .

Sunday, September 4, 2022

Dice and the Eightfold Cube

Filed under: General — Tags: , , , , — m759 @ 4:47 pm

At Hiroshima on March 9, 2018, Aitchison discussed another
"hexagonal array" with two added points… not at the center, as
in the Gell-Mann picture above, but rather at the ends  of one of
a cube's four diagonal axes of symmetry.

See some related illustrations below. 

Fans of the fictional "Transfiguration College" in the play
"Heroes of the Fourth Turning" may recall that August 6,
another Hiroshima date, was the Feast of the Transfiguration.

Iain Aitchison's 'dice-labelled' cuboctahedron at Hiroshima, March 2018

The exceptional role of  0 and  in Aitchison's diagram is echoed
by the occurence of these symbols in the "knight" labeling of a 
Miracle Octad Generator octad —

Transposition of  0 and  in the knight coordinatization 
induces the symplectic polarity of PG(3,2) discussed by 
(for instance) Anne Duncan in 1968.

Sunday, December 22, 2019

M24 from the Eightfold Cube

Exercise:  Use the Guitart 7-cycles below to relate the 56 triples
in an 8-set (such as the eightfold cube) to the 56 triangles in
a well-known Klein-quartic hyperbolic-plane tiling. Then use
the correspondence of the triples with the 56 spreads of PG(3,2)
to construct M24.

Click image below to download a Guitart PowerPoint presentation.

See as well earlier posts also tagged Triangles, Spreads, Mathieu.

Tuesday, March 5, 2019

The Eightfold Cube and PSL(2,7)

Filed under: General,Geometry — Tags: , , — m759 @ 10:45 pm

For PSL(2,7), this is ((49-1)(49-7))/((7-1)(2))=168.

The group GL(3,2), also of order 168, acts naturally
on the set of seven cube-slicings below —

Another way to picture the seven natural slicings —

Application of the above images to picturing the
isomorphism of PSL(2,7) with GL(3,2) —

Why PSL(2,7) is isomorphic to GL(3.2)

For a more detailed proof, see . . .

Sunday, September 30, 2018

Iconology of the Eightfold Cube

Filed under: General,Geometry — Tags: , — m759 @ 11:13 am

Found today in an Internet image search, from the website of
an anonymous amateur mathematics enthusiast

Forming Gray codes in the eightfold cube with the eight
I Ching  trigrams (bagua ) —

Forming Gray codes in the eightfold cube with the eight I Ching trigrams (bagua)

This  journal on Nov. 7, 2016

A different sort of cube, from the makers of the recent
Netflix miniseries "Maniac" —

See also Rubik in this  journal.

Monday, July 23, 2018

Eightfold Cube for Furey*

Filed under: General,Geometry — Tags: — m759 @ 10:31 pm

Click to enlarge:

Above are the 7 frames of an animated gif from a Wikipedia article.

* For the Furey of the title, see a July 20 Quanta Magazine  piece

See also the eightfold cube in this  journal.

"Before time began . . . ." — Optimus Prime

Friday, June 29, 2018

Triangles in the Eightfold Cube

From a post of July 25, 2008, “56 Triangles,” on the Klein quartic
and the eightfold cube

Baez’s discussion says that the Klein quartic’s 56 triangles
can be partitioned into 7 eight-triangle Egan ‘cubes’ that
correspond to the 7 points of the Fano plane in such a way
that automorphisms of the Klein quartic correspond to
automorphisms of the Fano plane. Show that the
56 triangles within the eightfold cube can also be partitioned
into 7 eight-triangle sets that correspond to the 7 points of the
Fano plane in such a way that (affine) transformations of the
eightfold cube induce (projective) automorphisms of the Fano plane.”

Related material from 1975 —

More recently

Friday, January 6, 2017

Eightfold Cube at Cornell

Filed under: General,Geometry — Tags: , — m759 @ 7:35 pm

The assignments page for a graduate algebra course at Cornell
last fall had a link to the eightfold cube:

Tuesday, August 30, 2016

The Eightfold Cube in Oslo

Filed under: General,Geometry — Tags: , — m759 @ 8:04 pm

A KUNSTforum.as article online today (translation by Google) —

The eightfold cube at the Vigeland Museum in Oslo

Update of Sept. 7, 2016: The corrections have been made,
except for the misspelling "Cullinan," which was caused by 
Google translation, not by KUNSTforum.

Thursday, March 17, 2016

On the Eightfold Cube

Filed under: General,Geometry — Tags: , — m759 @ 12:00 am

The following page quotes "Raiders of the Lost Crucible,"
a Log24 post from Halloween 2015.

Discussion of Cullinane's eightfold cube as exhibited by Josefine Lyche at the Vigeland Museum in Oslo

From KUNSTforum.as, a Norwegian art quarterly, issue no. 1 of 2016.

Related posts — See Lyche Eightfold.

Friday, October 9, 2015

Eightfold Cube in Oslo

Filed under: General,Geometry — Tags: , , — m759 @ 2:00 pm

An eightfold cube appears in this detail 
of a photo by Josefine Lyche of her
installation "4D Ambassador" at the 
Norwegian Sculpture Biennial 2015

Sculpture by Josefine Lyche of Cullinane's eightfold cube at Vigeland Museum in Oslo

(Detail from private Instagram photo.)

Catalog description of installation —

Google Translate version —

In a small bedroom to Foredragssalen populate
Josefine Lyche exhibition with a group sculptures
that are part of the work group 4D Ambassador
(2014-2015). Together they form an installation
where she uses light to amplify the feeling of
stepping into a new dimension, for which the title
suggests, this "ambassadors" for a dimension we
normally do not have access to. "Ambassadors"
physical forms presents nonphysical phenomena.
Lyches works have in recent years been placed
in something one might call an "esoteric direction"
in contemporary art, and defines itself this
sculpture group humorous as "glam-minimalist."
She has in many of his works returned to basic
geometric shapes, with hints to the occult,
"new space-age", mathematics and where
everything in between.

See also Lyche + "4D Ambassador" in this journal and
her website page with a 2012 version of that title.

Monday, April 9, 2012

Eightfold Cube Revisited

Filed under: General,Geometry — Tags: — m759 @ 12:00 pm

A search today (Élie Cartan's birthday) for material related to triality*

Dynkin diagram D4 for triality

yielded references to something that has been called a Bhargava cube .

Two pages from a 2006 paper by Bhargava—

Bhargava's reference [4] above for "the story of the cube" is to…

Higher Composition Laws I:
A New View on Gauss Composition,
and Quadratic Generalizations

Manjul Bhargava

The Annals of Mathematics
Second Series, Vol. 159, No. 1 (Jan., 2004), pp. 217-250
Published by: Annals of Mathematics
Article Stable URL: http://www.jstor.org/stable/3597249

A brief account in the context of embedding problems (click to enlarge)—

For more ways of slicing a cube,
see The Eightfold Cube —

* Note (1) some remarks by Tony Smith
   related to the above Dynkin diagram
   and (2) another colorful variation on the diagram.

Saturday, July 11, 2026

The Brautigan Reset

Filed under: General — Tags: , , — m759 @ 12:23 am

Vide  The Maxwell Enticement . . .

The Sept. 15, 1984, date in the image below was possibly
the death date of Hawkline Monster  author Richard Brautigan.

An Approach to Symmetric Generation of the Simple Group of Order 168

Quote adapted from a famous young-adult novel . . .

"There is  such a thing as affine group generation 
by permutation of parallel subspaces."

Monday, December 29, 2025

Octad Art — Bricks, Cubes, Flowers

For the bricks of the title, see other posts tagged Brick Space
For some cubes* and flowers, see below.

Combining features of the above two images, one might picture the 24
cells of the 4×6 array underlying the Curtis Miracle Octad Generator
(MOG) as each containing an eightfold cube, pictured as above with seven
of its subcubes showing and an eighth subcube hidden behind them.

The seven visible subcubes may be colored, as in the Curtis image of
the Klein map, with seven distinct colors… corresponding to the seven
edge-colors used in the Curtis-Klein map. Each of the seven visible
subcubes in a cell may also be labeled, on its visible faces, with a symbol
denoting one of the 24 points of the projective line over GF(23), just as the
faces in the Curtis-Klein map are labeled.  The hidden subcube in each cell
may be regarded as also so labeled, by the MOG label of the cell's position.

There is then enough information in the array's eightfold cubes' colors and
labels to construct the seven generating permutations of M24 described by
Curtis, and the 24 array cells may be regarded as now containing 24 distinct
entities — which perhaps might be called "octoids."

Those desiring a more decorative approach may replace the 24 labeled cubes
with 24 labeled "flowers." Each flower — like the map's symmetric seven
"petals" and the central "infinity heptagon" they surround — forms an octad.

Related Illustrations . . .

* See as well posts tagged Mathieu Cube . . .

Related material — 

The 56 triangles of  the eightfold cube . . .

The Eightfold Cube: The Beauty of Klein's Simple Group

   Image from Christmas Day 2005.

Post last revised:  December 30, 2025 @ 21:30 E.S.T.

Wednesday, August 6, 2025

Cubes

Filed under: General — m759 @ 1:33 am

From a post on the Feast of St. Nicholas, 2018, 
"The Mathieu Cube of Iain Aitchison" —

The Eightfold Cube: The Beauty of Klein's Simple Group

Compare and contrast . . .

The Supercube  of Solomon Golomb.

Thursday, April 24, 2025

Uniting the Three Cubes

Filed under: General — Tags: — m759 @ 10:36 am

Note that the number 8, a cube, may be represented as
either a literal "eightfold cube" — a 2x2x2 array — or as,
in the manner of R. T. Curtis, a 4-row 2-column "brick."

Related art . . .

Some will prefer a more dramatic approach to uniting three cubes . . .

Monday, December 16, 2024

Whitecaps for Beethoven

Filed under: General — m759 @ 2:24 pm

"Each of the 64 subcubes is supposed to be marked identically,
with white caps on two opposite vertices and a black band
around the subcube that separates the two white caps."

The Source

Related whitecap reading . . .

"Dice and the Eightfold Cube."

Thursday, June 13, 2024

Of London Bondage … continues.

Filed under: General — Tags: , — m759 @ 1:15 pm

From a bondage  search . . .

Loitering in Lara’s dressing room, she tries on
the faux-bondage harness she picked up in London….”

From Geometry for Belgium

Buildings, Tits, projective space, eightfold cube

Tuesday, May 21, 2024

Geometry for Belgium

Filed under: General — Tags: — m759 @ 11:59 am

Buildings, Tits, projective space, eightfold cube

Other matching patterns . . .

Tuesday Weld in the 1972 film of Didion's Play It As It Lays :

Tuesday Weld in 1972 film of Didion's 'Play It As It Lays'

Note the making of a matching pattern.

Saturday, May 4, 2024

What Lies Between

Filed under: General — Tags: — m759 @ 9:51 am

"I perceived . . . cinema is that which is between things,
not things [themselves] but between one and another."

— Jean-Luc Godard, "Introduction à une véritable histoire
du cinéma
," Albatros , Paris, 1980, p. 145

Log24 on 10 Dec. 2008

Road sign with double arrow pointing both left and right

Log24 on 12 Dec. 2008

Froebel's third gift, the eightfold cube

Between  the two image-dates above . . .

" 'The jury is still out on how long – and whether – people are actually
going to understand this.'  It took the world 150 years to realize
the true power of the printing press . . . ."  — Cade Metz

Thursday, March 21, 2024

The Cross Section

Filed under: General — Tags: , , , — m759 @ 5:29 am

Addendum for Christopher Nolan — Dice and the Eightfold Cube.

Tuesday, February 20, 2024

Backlight

Filed under: General — m759 @ 12:09 am

The epigraph of the previous post

"To Phaedrus, this backlight from the conflict between
the Sophists and the Cosmologists adds an entirely
new dimension to the Dialogues of Plato." — Robert M. Pirsig

Related reading and art for academic nihilists — See . . .

Reading and art I prefer —

Love in the Ruins , by Walker Percy, and . . .

Van Gogh  (by Ed Arno) and an image and
a passage from The Paradise of Childhood
(by Edward Wiebé):

'Dear Theo' cartoon of van Gogh by Ed Arno, adapted to illustrate the eightfold cube

Tuesday, October 24, 2023

A Bond with Reality:  The Geometry of Cuts

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


Illustrations of object and gestures
from finitegeometry.org/sc/ —

Object

Gestures

An earlier presentation of the above
seven partitions of the eightfold cube:

Seven partitions of the 2x2x2 cube in a book from 1906

Related mathematics:

The use  of binary coordinate systems
as a conceptual tool

Natural physical  transformations of square or cubical arrays
of actual physical cubes (i.e., building blocks) correspond to
natural algebraic  transformations of vector spaces over GF(2).
This was apparently not previously known.

See "The Thing and I."

and . . .

Galois.space .

 

Related entertainment:

Or Matt Helm by way of a Jedi cube.

Saturday, July 1, 2023

Mechanical Plaything (Hinged) vs. Conceptual Art (Unhinged)

Filed under: General — Tags: , , — m759 @ 2:44 pm

"Infinity Cube" … hinged plaything, for sale —

"Eightfold Cube" … un hinged concept, not for sale—

See as well yesterday's Trickster Fuge ,
and a 1906 discussion of the eightfold cube:

Page from 'The Paradise of Childhood,' 1906 edition

Wednesday, June 21, 2023

Annals of Magical Thinking: The Rushmore Embedding

Filed under: General — Tags: , — m759 @ 11:53 am

http://www.log24.com/log/pix18/180830-Harry_Potter-Phil_Stone-Bloomsbury-2004-p168.jpg

Less magical: "What are vector embeddings?"

Saturday, June 10, 2023

Green, Orange, Black

Filed under: General — Tags: — m759 @ 2:00 am

https://www.dailymail.co.uk/tvshowbiz/article-12179599/
Emma-Watson-stuns-revealing-black-bandeau-Prada.html

The colors surrounding Watson's body in the above
"bandeau" photo suggest a review.  A search in this  journal
for Green+Orange+Black  yields . . .

In the above image, the "hard core of objectivity" is represented
by the green-and-white eightfold cube.  The orange and black are,
of course, the Princeton colors.

Friday, June 2, 2023

Reichenbach’s Fell Swoop

Filed under: General — Tags: , — m759 @ 12:18 pm

See The Eightfold Cube  and . . .

Truth, Beauty, and The Good

Art is magic delivered from
the lie of being truth.
 — Theodor Adorno, Minima moralia,
London, New Left Books, 1974, p. 222
(First published in German in 1951.)

The director, Carol Reed, makes…
 impeccable use of the beauty of black….
— V. B. Daniel on The Third Man 

I see your ironical smile.
— Hans Reichenbach 

Adorno, The Third Man, and Reichenbach
are illustrated below (l. to r.) above the names of
cities with which they are associated. 

 

Friday, January 27, 2023

The Stone

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

Here stands the mean, uncomely stone,
’Tis very cheap in price!
The more it is despised by fools,
The more loved by the wise.

— https://jungcurrents.com/
the-story-of-the-stone-at-bollingen

Not so cheap:

Identical copies of the above image are being offered for sale
on three websites as representing a Masonic "cubic stone."

None of the three sites say where, exactly, the image originated.
Image searches for "Masonic stone," "Masonic cube," etc.,
fail to yield any other  pictures that look like the above image —
that of a 2x2x2 array of eight identical subcubes.

For purely mathematical — not  Masonic — properties of such
an array, see "eightfold cube" in this journal.

The websites offering to sell the questionable image —

Getty —

https://www.gettyimages.co.nz/detail/news-photo/
freemasonry-cubic-stone-masonic-symbol-news-photo/535802541

Alamy —

https://www.alamy.com/
stock-photo-cubic-stone-masonic-symbol-49942969.html

Photo12 —

https://www.photo12.com/en/image/
hac03239_2002_p1800264

No price quoted on public page:

Saturday, January 14, 2023

Châtelet on Weil — A “Space of Gestures”

Filed under: General — Tags: , , , — m759 @ 2:21 pm
 

From Gilles Châtelet, Introduction to Figuring Space
(Springer, 1999) —

Metaphysics does have a catalytic effect, which has been described in a very beautiful text by the mathematician André Weil:

Nothing is more fertile, all mathematicians know, than these obscure analogies, these murky reflections of one theory in another, these furtive caresses, these inexplicable tiffs; also nothing gives as much pleasure to the researcher. A day comes when the illusion vanishes: presentiment turns into certainty … Luckily for researchers, as the fogs clear at one point, they form again at another.4

André Weil cuts to the quick here: he conjures these 'murky reflections', these 'furtive caresses', the 'theory of Galois that Lagrange touches … with his finger through a screen that he does not manage to pierce.' He is a connoisseur of these metaphysical 'fogs' whose dissipation at one point heralds their reforming at another. It would be better to talk here of a horizon that tilts thereby revealing a new space of gestures which has not as yet been elucidated and cut out as structure.

4 A. Weil, 'De la métaphysique aux mathématiques', (Oeuvres, vol. II, p. 408.)

For gestures as fogs, see the oeuvre of  Guerino Mazzola.

For some clearer remarks, see . . .


Illustrations of object and gestures
from finitegeometry.org/sc/ —

 

Object

 

Gestures

An earlier presentation
of the above seven partitions
of the eightfold cube:

Seven partitions of the 2x2x2 cube in a book from 1906

Related material: Galois.space .

Monday, December 26, 2022

Super-8 Box

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

For the title, see other posts tagged Super-8.

Box containing Froebel's Third Gift-- The Eightfold Cube

Click image for some background.

Related material —

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