Classification and versal deformations of L_\infinity algebras on a 2|1-dimensional space

Details Classification and versal deformations of L_\infinity algebras on a 2|1-dimensional space Classification and versal deformations of L_\infinity algebras on a 2|1-dimensional space

2004-01-05

arxiv.org/abs/math/0401025v1

Homology, Homotopy, Appl. (7), (2005), 55-86.

Mathematics

Quantum Algebra

Scientific paper

This article explores \Z_2-graded L_\infinity algebra structures on a 2|1-dimensional vector space. The reader should note that our convention on the parities is the opposite of the usual one, because we define our structures on the symmetric coalgebra of the parity reversion of a space, so our 2|1-dimensional L_\infinity algebras correspond to the usual 1|2-dimensional algebras. We give a complete classification of all structures with a nonzero degree 1 term. We also classify all degree 2 codifferentials, which is the same as a classification of all 1|2-dimensional Z_2-graded Lie algebras. For each of these algebra structures, we calculate the cohomology and a miniversal deformation.

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