END USER LICENCE AGREEMENTMay 31st, 2018
FiledMay 31st, 2018If f : A → ¥ is a morphism of R-algebras, then f∗ : HCn(f ) : HC∗(A) → HC∗(¥) is a morphism of R-modules. Therefore HCn is a functor from R-Alg, the category of R-algebras, to R-Mod, the category of R-modules.