/ Jesus Gonzalez: The cohomology ring of binary tree braid groups

Jesus Gonzalez: The cohomology ring of binary tree braid groups

April 6, 2021
12:00 pm - 1:00 pm

Abstract: Using discrete Morse theory, I will describe an efficient presentation for the cohomology ring of the configuration space of unordered n-tuples of points on a binary tree. With such a presentation, the ring can be shown to be an exterior face ring, thus proving a conjecture by Farley in the case of binary trees. This is work in collaboration with Teresa Hoekstra.