Division by Zero

A blog about math, puzzles, teaching, and academic technology

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Just received an email that @SpanDeX_io will be discontinued in 2 months. Too bad. Their online LaTeX site showed promise. 16 hours ago
Here's a blog post I wrote a long time ago about the p-adic numbers. bit.ly/12h9fuO 18 hours ago
Cool facts I learned today about p-adic nums: MVT from calc doesn't hold, there are nonconstant f s.t. f'=0, infinite sum of n! converges! 18 hours ago
Was looking at web pages of other math depts & found that this one uses the Facebook face as the default face. Weird. bit.ly/1094Fks 20 hours ago
Inspiring TED talk by Jay Silver, creator of the MaKey MaKey. I want to go build things w/ my kids. bit.ly/17F8O3L (via @landisb) 20 hours ago