This week in mathematical physics, John Baez looks at the amazing tile patterns in the Alhambra in Granada, dividing the patterns into their characteristic Wallpaper Groups based on their symmetries. And if these patterns aren't good enough for you, try drawing your own with the Escher Web Sketch tool.
posted to MetaFilter by kiltedtaco at 8:45 AM on July 24, 2008 (20 comments)

What's your favorite math reference book, specifically for integrals?
posted to Ask Metafilter by kiltedtaco at 2:15 PM on September 5, 2007 (13 comments)

Why do some hotels have the bathroom light switch outside the bathroom?
posted to Ask Metafilter by kiltedtaco at 6:26 PM on June 21, 2007 (34 comments)