81 citations · 99 across the 14 of their papers we have counts for
17 papers
Hochschild cohomology and lifts of endomorphisms
Niels Lauritzen, Jesper Funch Thomsen
We study when algebra endomorphisms can be lifted to first-order flat lifts. To a first-order flat lift of an algebra and an endomorphism, we associate a canonical class in Hochsch…
Lifts of endomorphisms of Weyl algebras modulo
Niels Lauritzen, Jesper Funch Thomsen
Let denote a -algebra endomorphism of the -th Weyl algebra over a perfect field of positive characteristic . We prove that can be lifted to an endomor…
Finitely generated bimodules over Weyl algebras
Niels Lauritzen, Jesper Funch Thomsen
Let be the -th Weyl algebra over a field of characteristic zero, and an endomorphism with . We prove that if is finitely generated as a left…
The graph of a Weyl algebra endomorphism
Niels Lauritzen, Jesper Funch Thomsen
Endomorphisms of Weyl algebras are studied using bimodules. Initially, for a Weyl algebra over a field of characteristic zero, Bernstein's inequality implies that holonomic bimodul…
Two properties of endomorphisms of Weyl algebras
Niels Lauritzen, Jesper Funch Thomsen
We show that endomorphisms of Weyl algebras over fields of characteristic zero are flat and that birational endomorphisms are automorphisms by reducing to positive characteristic.…
Exact Algorithms for Solving Stochastic Games
Kristoffer Arnsfelt Hansen, Michal Koucky, Niels Lauritzen +2
Shapley's discounted stochastic games, Everett's recursive games and Gillette's undiscounted stochastic games are classical models of game theory describing two-player zero-sum gam…