Non-intersecting paths and the determinant of the distance matrix of a tree
Time: 14:00 -- Location: LRI, 445
summary:
We present a combinatorial proof of the Graham–Pollak formula for the determinant of the
distance matrix of a tree, via sign-reversing involutions and the Lindström–Gessel–Viennot Lemma.
This is joint work with Emmanuel Briand, Luis Esquivias-Quintero, Álvaro Gutierrez, and Adrián Lillo.