Monday, November 14, 2022
Saturday, November 12, 2022
Thursday, November 3, 2022
Linear Transformations for Scientists, or . . .
"Rotate, Flip, and Stretch, Baby!"
"One way to evaluate an artist is to observe the quantity and quality
of misinterpretation his work begets. By this measure Everett ranks
very highly. 'Damn it, I don’t understand it, but I love it,' mutters one
of the characters, regarding Sill’s weapon of nothingness. Same.
Kitu has a colleague named Eigen Vector, which refers to …
something having to do with linear transformations?"
— Book review by Molly Young in The New York Times
on All Hallows' Day 2022
See as well Bik in The New Yorker on June 23, 2021.
Comments Off on Linear Transformations for Scientists, or . . .
“A Lot”
"In a typical Booth cartoon, a lot happens at once."
Cartoonish news from yesterday . . .
New Yorker cartoon caption, not by Booth —
"What part of Noh don't you understand?"
Scholium —
The H — and …
Comments Off on “A Lot”
Colorful Appropriation*
(Title suggested by Google News today
and by a Percival Everett short story.}
Comments Off on Colorful Appropriation*
Wednesday, November 2, 2022
Tuesday, November 1, 2022
From “Goethe on All Souls’ Day”
The above title is that of a Log24 post on St. Cecilia's Day in 2017
that quoted some earlier All Souls' Day remarks from Berlin.
From that post —
Exercise: Explain why the lead article in the November issue of
Notices of the American Mathematical Society misquotes Weyl
and gives the misleading impression that the example above,
the eightfold cube , might be part of the mathematical pursuit
known as geometric group theory .
Background: Earlier instances here of the phrase "geometric group theory."
Comments Off on From “Goethe on All Souls’ Day”
Wednesday, February 5, 2020
Appropriation Appropriates*
* A weblog motto. See …
http://enowning.blogspot.com/
2007/07/alfred-denkers-dictionary-on-ereignis.html.
That Ereignis post is dated July 3, 2007.
Related material for the Church of Synchronology —
"The deepest strain in a religion is the particular
and particularistic doctrine it asserts at its heart,
in the company of such pronouncements as
‘Thou shalt have no other Gods before me.’
Take the deepest strain of religion away…
and what remains are the surface pieties —
abstractions without substantive bite —
to which everyone will assent
because they are empty, insipid, and safe."
— Stanley Fish, quoted here on July 3, 2007…
The opening date of the film "Transformers."
The opening pronouncement of "Transformers" —
Comments Off on Appropriation Appropriates*
Monday, June 21, 2010
Cube Spaces
Cubic models of finite geometries
display an interplay between
Euclidean and Galois geometry.
Example 1— The 2×2×2 Cube—
also known as the eightfold cube—
Group actions on the eightfold cube, 1984—
Version by Laszlo Lovasz et al., 2003—
Lovasz et al. go on to describe the same group actions
as in the 1984 note, without attribution.
Example 2— The 3×3×3 Cube
A note from 1985 describing group actions on a 3×3 plane array—
Undated software by Ed Pegg Jr. displays
group actions on a 3×3×3 cube that extend the
3×3 group actions from 1985 described above—
Pegg gives no reference to the 1985 work on group actions.
Example 3— The 4×4×4 Cube
A note from 27 years ago today—
As far as I know, this version of the
group-actions theorem has not yet been ripped off.
Comments Off on Cube Spaces