Immersions of module varieties
Volume 82 / 1999
Colloquium Mathematicum 82 (1999), 287-299
DOI: 10.4064/cm-82-2-287-299
Abstract
We show that a homomorphism of algebras is a categorical epimorphism if and only if all induced morphisms of the associated module varieties are immersions. This enables us to classify all minimal singularities in the subvarieties of modules from homogeneous standard tubes.