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Posted on November 03, 2014

Triangular Trusses
What is the minimum number of crosses braces you need to make a rectangular grid stable?

Posted on May 12, 2015

Poincaré conjecture
Poincaré conjecture, Topology, million dollar prize and pretty pictures.

Posted on September 07, 2019

Tessellating Regular Polygons
Why do some polygons tessellate and others do not?

Posted on November 22, 2012

Fat fingers and atomic typos
How miskeys on a QWERTY keyboard can make other legitimate words.