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math.GR2022
On generalized Schur groups
Grigory Ryabov
An -ring (Schur ring) is called central if it is contained in the center of the group ring. We introduce the notion of a generalized Schur group, i.e. such finite group that all…
math.GR2018
On separable abelian -groups
Grigory Ryabov
An -ring (a Schur ring) is said to be separable with respect to a class of groups if every algebraic isomorphism from the -ring in question to an -ring over…