Abstract
Given a flat local ring homomorphism $${R \rightarrow S}$$ and two finitely generated R-modules M and N, we describe conditions under which the modules $${{\rm Tor}^{R}_{i}(M,N)}$$ and $${{\rm Ext}^{i}_{R}(M,N)}$$ have S-module structures that are compatible with their R-module structures.
Published Version
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