sl(2)-Trivial Deformations of VectPol(R)-Modules of Symbols
Mabrouk Ben Ammar, Maha Boujelbene
Abstract
We consider the action of VectPol(R) by Lie derivative on the spaces of symbols of differential operators. We study the deformations of this action that become trivial once restricted to sl(2). Necessary and sufficient conditions for integrability of infinitesimal deformations are given.
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