2018
DOI: 10.1007/s11253-018-1466-3
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Elliptic Problems with Boundary Conditions of Higher Orders in Hörmander Spaces

Abstract: We investigate elliptic boundary-value problems for which the maximum of the orders of the boundary operators is equal to or greater than the order of the elliptic differential equation. We prove that the operator corresponding to an arbitrary problem of this kind is bounded and Fredholm between appropriate Hilbert spaces which form certain two-sided scales and are built on the base of isotropic Hörmander spaces. The differentiation order for these spaces is given by an arbitrary real number and positive funct… Show more

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Cited by 4 publications
(1 citation statement)
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“…These spaces form the extended Sobolev scale considered in [50,52] and [51,Section 2.4.2]. It has important applications to elliptic operators [54,55,73,74] and elliptic boundary-value problems [6,7,8,9,31]. Among them are applications to the investigation of various types of convergence of spectral expansions induced by elliptic operators.…”
Section: Introductionmentioning
confidence: 99%
“…These spaces form the extended Sobolev scale considered in [50,52] and [51,Section 2.4.2]. It has important applications to elliptic operators [54,55,73,74] and elliptic boundary-value problems [6,7,8,9,31]. Among them are applications to the investigation of various types of convergence of spectral expansions induced by elliptic operators.…”
Section: Introductionmentioning
confidence: 99%