Titlebook: New Results in Operator Theory and Its Applications; The Israel M. Glazma I. Gohberg,Yu. Lyubich Conference proceedings 1997 Springer Basel

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Asymptotic Formulas for Spectral and Weyl Functions of Sturm-Liouville Operators With Smooth Coeffithe differential operationwhere . is a real continuous potential. For . = tan . we denote a selfadjoint extension in ..(ℝ.) of the symmetric operator defined by ., whose domain contains the set of smooth functions with compact support in ℝ., satisfying the boundary conditionFurther on we shall deal

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Metric Critical Point Theory 2. Deformation Techniques,o deformation theorems, an extension of the mountain pass theorem and a dense solvability theorem for potential set-valued operators associated with critical points of Lipschitz perturbations of quadratic functional in Hilbert spaces.

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Commuting Nonselfadjoint Operators and a Unified Theory of Waves and Corpuscles,e of pairs of commuting operators with one-dimensional imaginary parts and we develop a unified theory of waves and particles for the case of Dirac equations. Particles emerge in Space as localized fields with singularities at their centers and wave equations appear as compatibility conditions for a

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The Duality of Spectral Manifolds and Local Spectral Theory,f λ ∈ C such that the resolvent ..(.) = (.). exists in the algebra of all linear bounded operators on .. This set is open and ..(.) is an analytic operator function on it. The spectrum σ(.) = C/ρ(.) is compact.

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W. N. Everitt,L. Markusgovernance (ESG); and decision and risk analysis. This book is useful for upper undergraduate and graduate level courses in strategic planning and management, business administration, decision making, and busin978-3-031-55671-5978-3-031-55669-2Series ISSN 2662-2866 Series E-ISSN 2662-2874