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Stability of the essential spectrum of second-order complex elliptic operators

Abstract : We prove compactness of the resolvent difference for second order divergence form operators whose matrix functions are close enough at infinity. Our theorems include certain subelliptic cases as well as cases with unbounded coefficients.
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https://hal-upec-upem.archives-ouvertes.fr/hal-00694261
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Submitted on : Thursday, May 3, 2012 - 11:36:36 PM
Last modification on : Thursday, March 19, 2020 - 12:26:02 PM

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  • HAL Id : hal-00694261, version 1

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Em Ouhabaz, P Stollmann. Stability of the essential spectrum of second-order complex elliptic operators. Journal für die reine und angewandte Mathematik, Walter de Gruyter, 1998, 500 (?), pp.113--126. ⟨hal-00694261⟩

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