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Friday, July 21, 2023

The Domino Model: Tricksters in the Attic

Filed under: General — Tags: , — m759 @ 1:19 pm

For related material on the geometry of a 2×3 rectangular array —
a domino — see the previous post and also a search in this journal for attic .

The Domino Model

Filed under: General — Tags: — m759 @ 8:24 am

Model of the 21-point projective plane consisting of the 1- and 2- subsets of a 6-set

Related material —

Friday, August 16, 2013

Six-Set Geometry

Filed under: General,Geometry — Tags: , — m759 @ 5:24 am

From April 23, 2013, in
​"Classical Geometry in Light of Galois Geometry"—

Click above image for some background from 1986.

Related material on six-set geometry from the classical literature—

Baker, H. F., "Note II: On the Hexagrammum Mysticum  of Pascal,"
in Principles of Geometry , Vol. II, Camb. U. Press, 1930, pp. 219-236  

Richmond, H. W., "The Figure Formed from Six Points in Space of Four Dimensions,"
Mathematische Annalen  (1900), Volume 53, Issue 1-2, pp 161-176

Richmond, H. W., "On the Figure of Six Points in Space of Four Dimensions," 
Quarterly Journal of Pure and Applied Mathematics , Vol. 31 (1900), pp. 125-160

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