Tonight is a Night for Spectral Graph Theory

I couldn't wait until Halloween to make this picture... pic.twitter.com/r9ivfghzpj

— Mason Porter (@masonporter) September 24, 2014

A Brief History of The Witch's House

When I was a kid, The Witch's House was the place to go on Halloween in Beverly Hills. It sounds like it still is.

(Tip of the cap to Kimberly Reiss.)