Per Alexandersson: P-partitions and p-positivity
Time: Wed 2018-10-10 10.15 - 11.15
Location: Room 3418, Lindstedtsvägen 25. Department of Mathematics, KTH
Participating: Per Alexandersson, KTH
Abstract
We study certain quasisymmetric functions given by posets, and prove that these are positive in a quasisymmetric analogue of the power-sum symmetric functions.This result implies power-sum positivity results for many families of symmetric functions, such as chromatic quasisymmetric functions, unicellular LLT polynomials and so on.
This is joint work with Robin Sulzgruber.