Erica Klarreich at Quanta on László Babai’s new algorithm for the graph isomorphism problem in quasi-polynomial time (that’s where is the number of vertices, for those of you who don’t remember your complexity classes). The actual preprint ison the arXiv.
David Austin at the AMS Samplings column on Petals, flowers, and circle packings.
FiveThirtyEight is looking for people who can predict the Oscars.
Katie Steckles has a video on the mathematics of wrapping presents.
Donald Knuth’s 21st annual Christmas lecture is on universal commafree codes. (Here’s a list of Knuth lectures, many available online.) I can’t find the source for this right now, but I seem to recall that these used to be called the “Christmas tree lectures” until he ran out of tree-related topics he wanted to lecture on.
How Frank Wilcoxon helped statisticians walk the nonparametric path, from Mario Cortina Borja and Julian Stander at Significance.
Kevin Hartnett at Quanta: Hope Rekindled for ABC Proof.