Two properties of endomorphisms of Weyl algebras

Niels Lauritzen; Jesper Funch Thomsen

Two properties of endomorphisms of Weyl algebras

Institut for Matematik

Publikation: Working paper/Preprint › Working paper › Forskning

Abstract

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. We also give examples showing that endomorphisms of Weyl algebras are not in general flat over fields of positive characteristic.

Originalsprog	Engelsk
Udgiver	arxiv.org
Antal sider	13
Status	Udgivet - 11 aug. 2015

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http://arxiv.org/abs/1508.02499Licens: Andet

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Two properties of endomorphisms of Weyl algebras

Abstract

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