UWO Mathematics Calendar

Week of March 12, 2023
Wednesday, March 15

Transformation Groups Seminar

Time: 10:30
Room: MC 107
Speaker: Matthias Franz (Western)
Title: Formality of Davis-Januszkiewicz spaces

I will present a proof that the Davis-Januszkiewicz space DJ(K) is integrally formal, meaning that its integral cochain algebra is quasi-isomorphic to its cohomology (which is the Stanley-Reisner ring of K). If time permits, I will sketch a proof that toric manifolds (or, more generally, equivariantly formal toric varieties) are formal in the sense of rational homotopy theory.