gumption traps

i know it shouldn’t bother me that
for the whole rest of the connected world
it’s trivially easy to capture images
& move ’em around on the net. but by golly
it does anyway. you could look it up.

anyhow, on the image at home you can see
all twenty-four group elements in all four
“panels”… as i called ’em upthread… and so
verify that the four “versions” of the
“binary tetrahedral group” presented
here are pairwise isomorphic. (hence,
duh [six pairs], six iso-isms.)

there are probably mistakes.
i’ll pay whoever spots one before me.
in books by knuth.

Photo on 6-4-20 at 4.58 PM


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