Mathematics > Algebraic Geometry
[Submitted on 12 Nov 2018 (v1), last revised 25 Jan 2022 (this version, v2)]
Title:Gelfand-Fuchs cohomology in algebraic geometry and factorization algebras
View PDFAbstract:Let X be a smooth affine variety over a field k of characteristic 0 and T(X) be the Lie algebra of regular vector fields on X. We compute the Lie algebra cohomology of T(X) with coefficients in k. The answer is given in topological terms relative to any embedding of k into complex numbers and is analogous to the classical Gelfand-Fuks computation for smooth vector fields on a C-infinity manifold. Unlike the C-infinity case, our setup is purely algebraic: no topology on T(X) is present. The proof is based on the techniques of factorization algebras, both in algebro-geometric and topological contexts.
Submission history
From: Mikhail Kapranov [view email][v1] Mon, 12 Nov 2018 22:56:03 UTC (66 KB)
[v2] Tue, 25 Jan 2022 09:21:11 UTC (98 KB)
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