Abstract
We consider the index problem for a wide class of nonlocal elliptic operators on a smooth closed manifold, namely, differential operators with shifts induced by the action of a (not necessarily periodic) isometric diffeomorphism. The key to the solution is the method of uniformization. To the nonlocal problem we assign a pseudodifferential operator, with the same index, acting on the sections of an infinite-dimensional vector bundle on a compact manifold. We then determine the index in terms of topological invariants of the symbol, using the Atiyah—Singer index theorem.
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Savin, A., Schrohe, E. & Sternin, B. Uniformization and index of elliptic operators associated with diffeomorphisms of a manifold. Russ. J. Math. Phys. 22, 410–420 (2015). https://doi.org/10.1134/S1061920815030115
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DOI: https://doi.org/10.1134/S1061920815030115