4 papers
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…
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…
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…
On the hom-associative Weyl algebras
Per Bäck, Johan Richter
The first (associative) Weyl algebra is formally rigid in the classical sense. In this paper, we show that it can however be formally deformed in a nontrivial way when considered a…