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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

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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.

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