In this post I will provide a gentle introduction to the theory of martingales (also called “fair games”) by way of a beautiful proof, due to Johan Wästlund, that there are precisely labeled trees on vertices. Apertif: a true story In my early twenties, I appeared on the TV show Jeopardy! That’s not what this […]| Matt Baker's Math Blog
This week I am nominally at the Permutation Patterns conference. I find myself on the edge of the (very strong) community of Permutation Patterners; also, after a month away, I have lots of catching up to do; also, Bruce Sagan … Continue reading →| Peter Cameron's Blog