Deforming a Lie algebra by means of a two form

Details Deforming a Lie algebra by means of a two form Deforming a Lie algebra by means of a two form

2006-05-30

arxiv.org/abs/math/0605748v3

Mathematics

Differential Geometry

An error consisting in overlooking few types in the Bianchi classification is corrected

Scientific paper

10.1016/j.geomphys.2006.10.008

We consider a vector space V over K=R or C, equipped with a skew symmetric bracket [.,.]: V x V --> V and a 2-form omega:V x V --> K. A simple change of the Jacobi identity to the form [A,[B,C]]+[C,[A,B]]+[B,[C,A]]=omega(B,C)A+omega(A,B)C+omega(C,A)B opens new possibilities, which shed new light on the Bianchi classification of 3-dimensional Lie algebras.

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