Results 61 to 70 of about 141 (138)
© Hindawi Publishing Corp. ON THE LARGEST ANALYTIC SET FOR CYCLIC OPERATORS
, 2002 We describe the set of analytic bounded point evaluations for an arbitrary cyclic bounded linear operator T on a Hilbert space ; some related consequences are discussed.
A. Bourhim
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An introduction to the distorted Fourier transform
Advanced Nonlinear StudiesThis article is intended as an introduction to the distorted Fourier transform associated with a Schrödinger operator on the line or the half-line. This versatile tool has seen numerous applications in nonlinear PDE in recent years.
Ko Haram, Schlag Wilhelm
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Radius preserving (semi) regularities in banach algebras
, 2019 In this note we investigate regularities (semiregularities) R and S in a Banach algebra A satisfying S ⊂ R and the corresponding spectra σS and σR satisfyingsup{|λ| : λ ∈ σ R(a)g = sup{|λ| : ∈ 2 σ S(a)}for all a ∈ A.Mathematics Subject Classification ...
Raubenheimer, H, Swartz, A
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Semigroup estimates and fast-slow dynamics in parabolic-hyperbolic systems
Advances in Nonlinear Analysis, 2018 We present a general procedure to describe slow dynamics in parabolic-hyperbolic systems, under suitable assumptions on the terms appearing in the equations. In particular, our strategy relies in semigroup estimates for the evolution system associated to
Strani Marta
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Resolvent and Scattering Matrix at the Maximum of the Potential [PDF]
, 2008 2000 Mathematics Subject Classification: 35P25, 81U20, 35S30, 47A10, 35B38.We study the microlocal structure of the resolvent of the semiclassical Schrödinger operator with short range potential at an energy which is a unique non-degenerate global ...
Ramond, Thierry +2 more
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, 2002 We prove some spectral inclusions for strongly continuous semigroups. Some sta-bility results are also established. 2000 Mathematics Subject Classification: 47D03, 47A10. 1. Introduction and preliminaries.
Abdelkader Elkoutri, Mohamed Aziz Taoudi
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Certain properties of the essential spectra in Banach spaces [PDF]
, 2017 Paper presented at the 4th Strathmore International Mathematics Conference (SIMC 2017), 19 - 23 June 2017, Strathmore University, Nairobi, Kenya.Let X be an arbitrary Banach space, and L (X) be the set of all bounded linear operators on X.
Agure, J. O. +2 more
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, 2009 In this work, we find some asymptotic formulas for the number N(ε)of eigenvalues smaller than −ε (ε > 0) of a self adjoint operator Lwhich is formed by differential expression(Ly)(x) = −(p(x)y(x)) − Q(x)y(x)and with the boundary conditiony(0) = 0as ε →
Adıgüzelov, Ehliman, Karayel, Serpil
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Spectral mapping theorems for the upper Weyl and upper Browder spectra
, 2018 We discuss the spectral mapping properties of the upper Weyl and upper Browder spectra of an arbitrary ordered Banach algebra element.Mathematics Subject Classication (2010): 46H05, 47A10, 47B65.Key words: Fredholm theory, upper Weyl spectrum, upper ...
Benjamin, Ronalda
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Expansion of eigenvalues of the perturbed discrete bilaplacian. [PDF]
Mon Hefte Math, 2022 Kholmatov SY +2 more
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