Merry Christmath! Jan4 On the second day of Christmas my true love gave to me… The only even prime and the absolute value of e to the iπ. A short post, just because I want this on my blog: a beautiful video and song by Vi Hart (take a look at the rest of her website, it’s amazing). Epsilon greater-than to you too. Also, thanks to Dave Richeson for sharing it in the first place.