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TitlePartial Differential Equations VI [electronic resource] : Elliptic and Parabolic Operators / edited by Yu. V. Egorov, M. A. Shubin
ImprintBerlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer, 1994
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Descript VII, 325 p. online resource


0. 1. The Scope of the Paper. This article is mainly devoted to the operยญ ators indicated in the title. More specifically, we consider elliptic differential and pseudodifferential operators with infinitely smooth symbols on infinitely smooth closed manifolds, i. e. compact manifolds without boundary. We also touch upon some variants of the theory of elliptic operators in !Rn. A separate article (Agranovich 1993) will be devoted to elliptic boundary problems for elliptic partial differential equations and systems. We now list the main topics discussed in the article. First of all, we exยญ pound theorems on Fredholm property of elliptic operators, on smoothness of solutions of elliptic equations, and, in the case of ellipticity with a parameยญ ter, on their unique solvability. A parametrix for an elliptic operator A (and A-). . J) is constructed by means of the calculus of pseudodifferential also for operators in !Rn, which is first outlined in a simple case with uniform in x estimates of the symbols. As functional spaces we mainly use Sobolev ยฃ - 2 spaces. We consider functions of elliptic operators and in more detail some simple functions and the properties of their kernels. This forms a foundation to discuss spectral properties of elliptic operators which we try to do in maxiยญ mal generality, i. e. , in general, without assuming selfadjointness. This requires presenting some notions and theorems of the theory of nonselfadjoint linear operators in abstract Hilbert space


I. Elliptic Operators on Closed Manifolds -- II. Degenerate Elliptic Equations and Boundary Problems -- III. Parabolic Equations -- Author Index

Mathematics Mathematical analysis Analysis (Mathematics) Physics Mathematics Analysis Theoretical Mathematical and Computational Physics


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