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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…
The title was suggested by a post on The Piano and by the dimensions of an image in this morning’s previous post: 404 x 211 pixels, suggesting 4/04,…
Jungle music suggested by yesterday’s Black Widow Club post, by the midnight post that followed, and by a May 24 death:
Or: Corrections Factually Incorrect: Ed Koch in the Las Vegas Sun , May 26, 2014: “In addition to Pearl, Bob’s other cousin, Bill Bailey, was a song and dance…
… and for Anthony Hopkins and a Black Widow, as well as for a filmmaker who reportedly died on May 19. Update of 4:48 PM ET: See also Philip Roth on an ambiguity. *…
The ninefold square, the eightfold cube, and monkeys. For posts on the models above, see quaternion in this journal. For the monkeys, see "Nothing Is More Fun than…
A book by this title, Richard A. Brualdi’s Combinatorial Matrix Classes , was published by Cambridge University Press in 2006: For some related remarks, see The Counter (March…
Some mathematical background for yesterday’s remarks “For the Bregnans” and “Lost in Translation“— “Matching Theory: A Sampler, from Dénes König to the Present,” by Michael D. Plummer, 1991….
Translation by Barbara Johnson: "The minimum number of rows— lines or columns— that contain all the zeros in a matrix is equal to the maximum number of zeros located in…