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- W2743138401 abstract "We describe the space of central extensions of the associative algebra Ψn of formal pseudo-differential symbols in n≥1 independent variables using Hochschild (co)homology groups: we prove that the first Hochschild (co)homology group HH1(Ψn) is 2n-dimensional and we use this fact to calculate the first Lie (co)homology group HLie1(Ψn) of Ψn equipped with the Lie bracket induced by its associative algebra structure. As an application, we use our calculations to provide examples of infinite-dimensional quadratic symplectic Lie algebras." @default.
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- W2743138401 date "2018-08-01" @default.
- W2743138401 modified "2023-10-13" @default.
- W2743138401 title "Central extensions of the algebra of formal pseudo-differential symbols via Hochschild (co)homology and quadratic symplectic Lie algebras" @default.
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- W2743138401 doi "https://doi.org/10.1016/j.jpaa.2017.08.017" @default.
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