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March 15, 2023
Wednesday, March 15
Transformation Groups Seminar
Time: 10:30
Speaker: Matthias Franz (Western)
Title: "Formality of Davis-Januszkiewicz spaces"
Room: MC 107

Abstract: 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.