Graded change of ring
arXiv:1902.08611 · doi:10.2989/16073606.2019.1586784
Abstract
We investigate scalar restriction, scalar extension, and scalar coextension functors for graded modules, including their interplay with coarsening functors, graded tensor products, and graded Hom functors. This leads to several characterisations of epimorphisms of graded rings.
To appear in Quaestiones Mathematicae