3 papers
math.RA2019
Centralizers in PBW Extensions
Alex Behakanira Tumwesigye, Johan Richter, Sergei Silvestrov
In this article we give a description for the centralizer of the coefficient ring in the skew PBW extension We give an explicit description in the q…
math.RA2019
Commutants in crossed product algebras for piecewise constant functions on the real line
Alex Behakanira Tumwesigye, Johan Richter, Sergei Silvestrov
In this paper we consider commutants in crossed product algebras, for algebras of piece-wise constant functions on the real line acted on by the group of integers . The…
math.RA2019
Ore extensions for function algebras
Johan Richter, Sergei Silvestrov, Alex Tumwesigye
In this article we consider the Ore extension Algebra for the algebra of functions with finite support on a countable set. We derive explicit formulas for twisted der…