The figure below is one approach to the exercise
posted here on December 10, 2016.
Some background from earlier posts —
Click the image below to enlarge it.
Monday, December 19, 2016
Tetrahedral Cayley-Salmon Model
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Wednesday, April 14, 2021
Raiders of the Lost Coordinates . . .
A pyramid scheme† in memory of the late Bernie Madoff —
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The above passage from Whitehead’s 1906 book suggests
that the tetrahedral model may be older than Polster thinks.*
This is shown by . . .
† See also “Profzi Scheme.”
* For some related work of the above “D. Mesner,” see
Mesner, D. (1967). “Sets of Disjoint Lines in PG(3, q),”
Canadian Journal of Mathematics, 19, 273-280.
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Wednesday, February 17, 2021
Raiders of the Lost Coordinates . . .
From other posts tagged Tetrahedron vs. Square —
"There is such a thing as a 4-set."
— Saying adapted from a 1962 young-adult novel.
Illustration (central detail a from the above tetrahedral figure) —
A Harvard Variation
from Timothy Leary —
The topics of Harvard and Leary suggest some other cultural
history, from The Coasters — "Poison Ivy" and "Yakety Yak."
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Tuesday, October 15, 2019
Inside the Fire Temple
(The title refers to Log24 posts now tagged Fire Temple.)
In memory of a New Yorker cartoonist who
reportedly died at 97 on October 3, 2019 …
"Read something that means something."
— New Yorker advertising slogan
From posts tagged Tetrahedron vs. Square —
This journal on October 3 —
"There is such a thing as a 4-set."
— Saying adapted from a 1962 young-adult novel.
Illustration (central detail a from the above tetrahedral figure) —
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Tuesday, September 24, 2019
Emissary
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Thursday, September 12, 2019
Tetrahedral Structures
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Playing with shapes related to some 1906 work of Whitehead:
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Tuesday, September 6, 2016
Ethno-Aesthetics
"Lévi-Strauss is an infatuated aesthetician."
— Boris Wiseman, Lévi-Strauss, Anthropology and Aesthetics ,
Cambridge University Press, 2007, p. 27
Last night's link from the Piper Laurie image leads to …
Related theoretical material — See Hudson + Tetrahedra.
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Sunday, July 17, 2016
Symmetries and Correspondences
Continued from July 14, 2016 —
Symmetries and Correspondences in 1879 —
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Cyparissos Stephanos Sur les systèmes desmiques de trois tétraèdres Bulletin des sciences mathématiques et astronomiques 2e série, Tome 3, No. 1 (1879), pp. 424-456. <http://www.numdam.org/item?id=BSMA_1879_2_3_1_424_1> © Gauthier-Villars, 1879, tous droits réservés. |
Symmetries and Correspondences in 1905 —
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Tuesday, March 19, 2013
Mathematics and Narrative (continued)
Angels & Demons meet Hudson Hawk
Dan Brown's four-elements diamond in Angels & Demons :
The Leonardo Crystal from Hudson Hawk :
Mathematics may be used to relate (very loosely)
Dan Brown's fanciful diamond figure to the fanciful
Leonardo Crystal from Hudson Hawk …
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Compare Brown's fictional Illuminati Diamond to the
nonfictional figures in The Diamond Theorem and
Theme and Variations. -
Compare the fictional Leonardo Crystal to Hudson's
nonfictional desmic system of tetrahedra (above), and
see, in Rosenhain and Göpel Tetrads in PG(3,2), how
the diamond theorem is related to Hudson's work.
For the tetrads ' relationship to tetrahedra , see
Hudson's own book.
"Giving himself a head rub, Hawk bears down on
the three oddly malleable objects. He TANGLES
and BENDS and with a loud SNAP, puts them together,
forming the Crystal from the opening scene."
— A screenplay of Hudson Hawk
Happy birthday to Bruce Willis.
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