Infinity Algebras, Massey Products, and Deformations

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Abstract: In this paper we give some examples of generalized Massey products, arising from deformations of A-infinity and L-infinity algebras. The generalized Massey products are given by certain graded commutative algebra structures, depending on the deformation problem considered. We show that the formal deformations of infinity algebras give rise to the same algebraic structure as the deformations of Z2-graded Lie algebras. However, the problem of deforming a Lie algebra into an L-infinity algebra, or an associative algebra into an A-infinity algebra gives rise to a new algebra. We also consider deformations of infinity algebras with a base. In math.QA/9602024, it was shown that the Jacobi identity for a bracket on the tensor product of a Lie algebra and a graded commutative algebra is equivalent to a Maurer-Cartan formula. We prove a generalized result in the case of infinity algebras.

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