Speaker: Mikhail Mazin (KSU)

Abstract: Last time I introduced the Shi and extended Shi arrangements and explained how one can count the number of regions for these arrangements using the Sommers regions. In this second talk I will introduce Parking Functions, Pak-Stanley labeling, and their generalizations corresponding to multigraphs. The main result I aim to explain is the surjectivity of the generalized Pak-Stanley labeling.