导出函子的上升性质
Ascent properties for derived functors
摘要:
给定平坦局部环同态R \to S和两个平坦生成的R-模M和N,我们给出了模Tor^i(M,N)和Ext^i(M,N)具有与其R-模结构相容的S-模结构的条件.
英文摘要:
Given a flat local ring homomorphism R\to S, and two finitely generated R-modules M and N, we describe conditions under which the modules Tor^i(M,N) and Ext^i(M,N) have S-module structures that are compatible with their R-module structures.
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