Speaker:
Ira Gessel (Brandeis University)
Email:
gessel@brandeis.eduLocation:
Departamento de Álgebra
Date:
Thu, 31 mar 2022 17:00
Professor Emeritus, combinatoria
This will be an expository talk for nonspecialists about some topics in enumerative combinatorics. I will first discuss how sums with alternating signs can be interpreted combinatorially through sign-reversing involutions. Next I will discuss the reflection principle for lattice path enumeration and its generalization to Weyl groups. Finally I will discuss the enumeration of configurations of nonintersecting paths through determinants, with applications to counting other combinatorial objects such as plane partitions and tilings.
LINK TO THE TALK: https://eu.bbcollab.com/guest/f7bfcfc77eff4cc2840dea5167115b50
Charla conjunta con el seminario Combinatoria Algebraica en Sevilla