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Lie conformal algebra cohomology and the variational complex

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arxiv 0812.4897 v1 pith:5HAOZOPH submitted 2008-12-29 math.QA math-phmath.MPnlin.SI

classification math.QAmath-phmath.MPnlin.SI
keywords complexalgebracohomologyconformalvariationalcalculusconstructionexplicit
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We find an interpretation of the complex of variational calculus in terms of the Lie conformal algebra cohomology theory. This leads to a better understanding of both theories. In particular, we give an explicit construction of the Lie conformal algebra cohomology complex, and endow it with a structure of a g-complex. On the other hand, we give an explicit construction of the complex of variational calculus in terms of skew-symmetric poly-differential operators.

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  1. Double Poisson (vertex) algebra cohomology

    math.RT 2025-09 accept novelty 8.0 of 10

    The authors define a completed double Poisson cohomology valid for all double Poisson brackets, and introduce three cohomology theories for double Poisson vertex algebras, with representation functor compatibility.

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