Mark Taylor on Mastodon: Not sure what these mathematicians are on about, the Spectre clearly tiles periodically

Mark Taylor @mark

Not sure what these mathematicians are on about, the Spectre clearly tiles periodically

f2eb5c886d837bbb.png A white rectangle with a face composed of two vertical lines for eyes, a right-angled nose with the corner at the bottom right, and a short horizontal line for the mouth.