Titlebook: Differential and Integral Operators; International Worksh I. Gohberg,R. Mennicken,C. Tretter Conference proceedings 1998 Springer Basel AG

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Elliptic boundary value problems for general elliptic systems in complete scales of Banach spaces,Elliptic boundary value problems for general elliptic systems are studied in complete scales of Banach type in the case where the boundary conditions contain both the function from the systems, and the additional functions, defined at the boundary of the domain.

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Classic spectral problems,This article is dedicated to the detailed investigation of classic spectral problems. We show that the string matrix equation and the Sturm-Liouville equation belong to a class of canonical systems.

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https://doi.org/10.1007/978-3-0348-8789-2Algebra; Applied Mathematics; Boundary value problem; Finite; Helmholtz equation; Invariant; Manifold; Oper

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Conference proceedings 1998e range of latest developments in operator theory and its applications. The programme consisted of 6 invited plenary lectures, 54 invited special topic lectures and more than 100 invited session talks. About 180 participants from 25 countries attended the workshop, more than a third came from Easter

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0255-0156 ecial topic lectures and more than 100 invited session talks. About 180 participants from 25 countries attended the workshop, more than a third came from Easter978-3-0348-9774-7978-3-0348-8789-2Series ISSN 0255-0156 Series E-ISSN 2296-4878

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Limit behaviour in a singular perturbation problem, regularized convolution operators and the threeperator (Pdo) with unbounded symbol. The entire family of self-adjoint extensions of this operator is studied using harmonic analysis. A regularization procedure for this Pdo is introduced, the limit behavior of the regularized operators when the regularization parameter is removed is analyzed and a

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Completeness of scattering systems with obstacles of finite capacity,blished by ..,K.} is complete, i.e., the wave operators exist and are complete if the singularity region Γ has finite capacity. One consequence is the stability of the absolutely continuous spectra of K. and K. respectively. Such sets can be unbounded, which yields a non-local freedom of perturbatio