22/10/2009, 14:30 — 15:30 — Sala P4.35, Pavilhão de Matemática Stavros Papadakis, Instituto Superior Técnico
Unprojection and Stanley-Reisner rings of Gorenstein simplicial complexes
Unprojection theory aims to analyze complicated commutative rings in terms of simpler ones. The talk will be about joint work in progress with Janko Boehm (Saarbruecken) that relates, on the algebraic level of Stanley--Reisner rings, stellar subdivisions of a certain class of simplicial complexes (which includes all sphere triangulations) with Kustin--Miller unprojection. I will also mention a related result about boundary complexes of cyclic polytopes.
