Vanishing of Tor over fiber products

Author:

Freitas T.,Pérez V.,Wiegand R.,Wiegand S.

Abstract

Let ( S , m , k ) (S,\mathfrak {m},k) and ( T , n , k ) (T,\mathfrak {n},k) be local rings, and let R R denote their fiber product over their common residue field k k . Inspired by work of Nasseh and Sather-Wagstaff, we explore consequences of the vanishing of T o r m R ( M , N ) \mathrm {Tor}^R_m(M,N) for various values of m m , where M M and N N are finitely generated R R -modules.

Funder

Simons Foundation

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

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