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- W1982414552 abstract "The differential forms on the jet bundle J ∞ E of a bundle E → M over a compact n-manifold M of degree greater than n determine differential forms on the space Γ(E) of sections of E. The forms obtained in this way are called local forms on Γ(E), and its cohomology is called the local cohomology of Γ(E). More generally, if a group [Formula: see text] acts on E, we can define the local [Formula: see text]-invariant cohomology. The local cohomology is computed in terms of the cohomology of the jet bundle by means of the variational bicomplex theory. A similar result is obtained for the local [Formula: see text]-invariant cohomology. Using these results and the techniques for the computation of the cohomology of invariant variational bicomplexes in terms of relative Gelfand–Fuchs cohomology introduced in [4], we construct non trivial local cohomology classes in the important cases of Riemannian metrics with the action of diffeomorphisms, and connections on a principal bundle with the action of automorphisms." @default.
- W1982414552 created "2016-06-24" @default.
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- W1982414552 date "2008-06-01" @default.
- W1982414552 modified "2023-09-25" @default.
- W1982414552 title "LOCAL COHOMOLOGY AND THE VARIATIONAL BICOMPLEX" @default.
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- W1982414552 doi "https://doi.org/10.1142/s0219887808002965" @default.
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