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Displaying similar documents to “Anti-Isomorphisms of Endomorphism Rings of Locally Free Modules.”

Almost-free E(R)-algebras and E(A,R)-modules

Rüdiger Göbel, Lutz Strüngmann (2001)

Fundamenta Mathematicae

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Let R be a unital commutative ring and A a unital R-algebra. We introduce the category of E(A,R)-modules which is a natural extension of the category of E-modules. The properties of E(A,R)-modules are studied; in particular we consider the subclass of E(R)-algebras. This subclass is of special interest since it coincides with the class of E-rings in the case R = ℤ. Assuming diamond ⋄, almost-free E(R)-algebras of cardinality κ are constructed for any regular non-weakly compact cardinal...