Infinity Algebras and the Homology of Graph Complexes
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Infinity Algebras and the Homology of Graph Complexes

  • Author(s): Penkava, Michael
  • et al.

Published Web Location

https://arxiv.org/pdf/q-alg/9601018.pdf
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Abstract

An A-infinity algebra is a generalization of a associative algebra, and an L-infinity algebra is a generalization of a Lie algebra. In this paper, we show that an L-infinity algebra with an invariant inner product determines a cycle in the homology of the complex of metric ordinary graphs. Since the cyclic cohomology of a Lie algebra with an invariant inner product determines infinitesimal deformations of the Lie algebra into an L-infinity algebra with an invariant inner product, this construction shows that a cyclic cocycle of a Lie algebra determines a cycle in the homology of the graph complex. In this paper a simple proof of the corresponding result for A-infinity algebras, which was proved in a different manner in an earlier paper, is given.

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