Log24

Tuesday, February 11, 2025

Compiling BASIC, Decompiling* Wolfenstein

Filed under: General — Tags: , , — m759 @ 10:54 am

Yesterday, Peter Woit posted on Bill Gates's new autobiography.
An excerpt from his post:

In other Harvard-related news . . .

A computer-related fantasy film — "The Net" — and the above
headline from February 6 suggest a look at . . .

* Vide  "Paranoia Strikes Deep" (Log24, Dec. 1, 2011).

Monday, February 10, 2025

Brick Space: Points with Parts

Filed under: General — Tags: , , , — m759 @ 3:47 pm

This post's "Points with Parts" title may serve as an introduction to
what has been called "the most powerful diagram in mathematics" —
the "Miracle Octad Generator" (MOG) of Robert T. Curtis.

The Miracle Octad Generator (MOG) of R. T. Curtis

Curtis himself has apparently not written on the geometric background
of his diagram — the finite projective spaces PG(5,2) and PG(3,2), of 
five and of three dimensions over the two-element Galois field GF(2).

The component parts of the MOG diagram, the 2×4 Curtis "bricks,"
may be regarded* as forming both PG(5,2) and PG(3,2) . . .
Pace  Euclid, points with parts. For more on the MOG's geometric
background, see the Klein correspondence  in the previous post.

For a simpler example of "points with parts, see
http://m759.net/wordpress/?s=200229.

* Use the notions of Galois (XOR, or "symmetric-difference") addition
of even  subsets, and such addition "modulo complementation," to
decrease the number of dimensions of the spaces involved.

Powered by WordPress