We develop a notion of deformations using a valuation ring as a ring of coefficients. This allows us in particular to consider the classical Gerstenhaber deformations of associative or Lie algebras as valued deformations and to solve the equation of deformations in a polynomial framework. We consider also deformations of the enveloping algebra of a rigid Lie algebra and we define valued deformations for some classes of non associative algebras.
机构:
Ernst Moritz Arndt Univ Greifswald, Inst Math & Informat, D-17487 Greifswald, GermanyErnst Moritz Arndt Univ Greifswald, Inst Math & Informat, D-17487 Greifswald, Germany