Category: Geometry Page 19 of 168
(Continued from 10:09 AM today) The quotation below is from a webpage on media magnate Walter Annenberg. Annenberg Hall at Harvard, originally constructed to honor the Civil War dead, was renamed…
The authors of the following offer an introduction to symmetry in quilt blocks. They assume, perhaps rightly, that their audience is intellectually impaired: “A quilt block is made of 16…
"History is a deep and complicated puzzle— especially when it involves more dimensions than time." — Introduction to a novella in Analog Science Fiction "Annenberg Hall" at Harvard…
(Continued) Some bizarre remarks on “purity” in the previous post suggest a review of some pure mathematics.
Continued. Anyone tackling the Raumproblem described here on Feb. 21, 2014 should know the history of coordinatizations of the 4×6 Miracle Octad Generator (MOG) array by R. T. Curtis and…
“The relevance of a geometric theorem is determined by what the theorem tells us about space, and not by the eventual difficulty of the proof.” — Gian-Carlo Rota discussing the…
The previous post told how user58512 at math.stackexchange.com sought in 2013 a geometric representation of Q8 , the quaternion group. He ended up displaying an illustration that very possibly was drawn,…
The title refers to a Scientific American weblog item discussed here on May 31, 2014: Some closely related material appeared here on Dec. 30, 2011: A version of the…
Galois matrices, the subject of the previous post, are of course not new. See, for instance, Steinberg in 1951: The American Mathematical Society reports that Steinberg died on…
The webpage Galois.us, on Galois matrices , has been created as a starting point for remarks on the algebra (as opposed to the geometry) underlying the rings of matrices mentioned in…