Algebraic Combinatorics Seminar - Jordan Long

Thursday, August 6, 2020 2:30 pm - 2:30 pm EDT (GMT -04:00)

Title: Subdivergence-free gluings of trees

Speaker: Jordan Long
Affiliation: University of Waterloo
Zoom: Contact Karen Yeats


Motivated by questions in quantum field theory, we introduce a purely combinatorial problem of counting subdivergence-free gluings of trees. We present closed-form expressions counting subdivergence-free gluings for four different families of trees, as well as an algorithm to count subdivergence-free gluings of arbitrary pairs of trees. This is joint work with Clair Dai and Karen Yeats.