[…] [Update: Check out my second post in which I provide a template so you can make your own Sugihara circle/square optical illusion out of paper.] […]

John Mather (1942–2017)—Princeton mathematics professor who specialized in differential topology & dynamical systems bit.ly/2l49jO09 hours ago

RT @KyleCranmer: Reminds me of John Nash's 1955 letter to NSA "do not give the impression I am just a crank or circle-squarer." https://t.c…15 hours ago

GB Shaw (1889): He replied… that I moved amidst cranks, Bohemians, unbelievers, agitators, and—generally speaking—riff-raff of all sorts. 1 day ago

The first use of the word "crank" (as in mathematical/scientific crank) may have been in a 1906 book review in _Nat… twitter.com/i/web/status/8…1 day ago

"Meet the Math Professor [Moon Duchin] Who’s Fighting Gerrymandering With Geometry" | Chronicle of Higher Ed bit.ly/2m7z6tt1 day ago

[…] [Update: Check out my second post in which I provide a template so you can make your own Sugihara circle/square optical illusion out of paper.] […]

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Sugihara’s Circle/Square Optical Illusion | Division by Zeroon July 6, 2016at 12:32 pm

[…] Make a Sugihara Circle/Square Optical Illusion Out of Paper […]

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Maak zelf een optische illusie – Koezeblogon July 7, 2016at 3:37 am

[…] Per i curiosi, Dave ha aggiunto un post con una figura da ritagliare per ottenere il […]

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L’illusione della quadratura del cerchio [Pillole] | backup del Poston July 7, 2016at 1:28 pm

Thought you’d like to see that my 12yo was inspired by your posts! Thanks so much!

http://monarchwebwork.com/lol/inspired-by-math/

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shelleynashon July 7, 2016at 3:49 pm

Great! Thanks for sharing that!

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Dave Richesonon July 7, 2016at 4:11 pm

[…] both an explanation of the mathematics behind the illusion and a paper template you can use to make your own ambiguous […]

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Wild Maths, Ambiguous Cylinders, and 228 Women | Math Munchon July 8, 2016at 12:46 am