Results 11 to 20 of about 1,220,984 (295)
Spectrum and resolvent of multi-channel systems with internal energies and common boundary conditions [PDF]
Қарағанды университетінің хабаршысы. Математика сериясыIn the article the spectrum and resolvent of the so-called multichannel systems with nonzero internal energies were investigated. The spectrum and resolvent of multichannel Sturm-Liouville systems with non-zero internal energies mi2 and general boundary
A.A. Valiyev +2 more
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B-Weyl spectrum and poles of the resolvent [PDF]
Journal of Mathematical Analysis and Applications, 2002 A bounded linear operator \(T\) on a Banach space \(X\) is called a \(B\)-Fredholm operator if for some integer \(n\), the range space \(R(T^n)\) is closed and \(T: R(T^n) \rightarrow R(T^n)\) is a Fredholm operator. When the index is \(0\), \(T\) is called a \(B\)-Weyl operator. In this case, the \(B\)-Weyl spectrum is defined by \(\sigma_{BW}(T) = \{
Berkani, M., M. Berkani
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An Introduction to Spectral Theory of Bounded Linear Operators in Intuitionistic Fuzzy Pseudo Normed Linear Space [PDF]
Sahand Communications in Mathematical Analysis, 2022 In this paper, focus is on the study of spectrum and the spectral properties of bounded linear operators in intuitionistic fuzzy pseudo normed linear spaces(IFPNLS).
Bivas Dinda +2 more
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Trace formulae and singular values of resolvent power differences of self-adjoint elliptic operators [PDF]
, 2013 In this note self-adjoint realizations of second order elliptic differential expressions with non-local Robin boundary conditions on a domain Ω⊂Rn with smooth compact boundary are studied. A Schatten--von Neumann type estimate for the singular values of
Lotoreichik, Vladimir +2 more
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A note on Hausdorff convergence of pseudospectra [PDF]
Opuscula Mathematica, 2022 For a bounded linear operator on a Banach space, we study approximation of the spectrum and pseudospectra in the Hausdorff distance. We give sufficient and necessary conditions in terms of pointwise convergence of appropriate spectral quantities.
Marko Lindner, Dennis Schmeckpeper
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Schrödinger operators with δ and δ′-potentials supported on hypersurfaces [PDF]
, 2013 Self-adjoint Schrödinger operators with δ and δ′-potentials supported on a smooth compact hypersurface are defined explicitly via boundary conditions.
Lotoreichik, Vladimir +2 more
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Resolving the Peak of the Black Hole Mass Spectrum
The Astrophysical Journal, 2022 Abstract Gravitational-wave (GW) detections of binary black hole (BH) mergers have begun to sample the cosmic BH mass distribution. The evolution of single stellar cores predicts a gap in the BH mass distribution due to pair-instability supernovae (PISNe).
Farag, Ebraheem +4 more
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Spatially Resolved Spectrum of the Vela PWN [PDF]
Symposium - International Astronomical Union, 2004 A series of 13 Chandra observations has provided the deepest images of the Vela PWN yet available. In addition to the fine structure of the inner PWN features, a much larger and fainter asymmetric X-ray nebula emerges in the summed images. The shape of this outer PWN is similar to that of the radio PWN.
Kargaltsev, Oleg, Pavlov, George
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Mathematics, 2023 We define the notion of a point interaction for general non-self-adjoint elliptic operators in planar domains. We show that such operators can be approximated in a geometric way by cutting out a small cavity around the point, at which the interaction is ...
Denis Ivanovich Borisov
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Boundary Value Problems, 2020 In this paper we consider singular Sturm–Liouville problems with eigenparameter dependent boundary conditions and two singular endpoints. The spectrum of such problems can be approximated by those of the inherited restriction operators constructed.
Maozhu Zhang, Kun Li, Hongxiang Song
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