Columbus in Zombieland
Friday, March 26, 2021
ABC Art
Some images from Feb. 5, 2021, in a search for "ABC Art" —
A colored version using CSS —
See https://codepen.io/m759/pen/wvoGwzx .
“Somehow, a message had been lost on me. Groups act .
The elements of a group do not have to just sit there,
abstract and implacable; they can do things, they can
‘produce changes.’ In particular, groups arise
naturally as the symmetries of a set with structure.”
— Thomas W. Tucker, review of Lyndon’s Groups and Geometry
in The American Mathematical Monthly , Vol. 94, No. 4
(April 1987), pp. 392-394.
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Thursday, March 25, 2021
A Day at the Museum
Context for the Cullinane diamond theorem in
the Smithsonian’s NASA Astrophysics Data System:
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A Night at the Museum
From the Smithsonian Astrophysical Observatory —
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Only Connect
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