Research Article

Graded change of ring

Published in: Quaestiones Mathematicae
Volume 43 , issue 7 , 2020 , pages: 813–839

DOI: 10.2989/16073606.2019.1586784

Author(s): Fred Rohrer , Switzerland

Keywords: Primary: 16W50 , Secondary: 13A02 , Primary: 16W50 , Secondary: 13A02

Abstract

We investigate scalar restriction, scalar extension, and scalar coexten- sion functors for graded modules, including their interplay with coarsening functors, graded tensor products, and graded Hom functors. This leads to several character- isations of epimorphisms of graded rings.

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