On the spectrum of periodic perturbations of certain unbounded Jacobi operators by Jaouad Sahbani

Subjects: “…essential spectrum…”
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A characterization of Wolf and Schechter essential pseudospectra by Sara Smail, Chafika Belabbaci

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Hildebrandt's theorem for the essential spectrum by Janko Bračič, Cristina Diogo

Subjects: “…essential spectrum…”
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The Faddeev equation and location of the essential spectrum of a three-particle model operator by Tulkin Kh Rasulov, Askar A Rakhmonov

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On the Essential Spectrum of Many-Particle Pseudorelativistic Hamiltonians with Permutational Symmetry Account by Grigorii Zhislin

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Compact decoupling for thermoviscoelasticity in irregular domains by El Mustapha Ait Ben Hassi, Hammadi Bouslous, Lahcen Maniar

Subjects: “…semigroup norm continuity, essential spectrum…”
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On the essential spectrum of a model operator associated with the system of three particles on a lattice by Tulkin Kh Rasulov

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Compactness of the difference between the porous thermoelastic semigroup and its decoupled semigroup by El Mustapha Ait Benhassi, Jamal Eddine Benyaich, Hammadi Bouslous, Lahcen Maniar

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Essential spectra of weighted composition operators with hyperbolic symbols by Hyvärinen Olli, Nieminen Ilmari

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Structure of the essential spectrum of a model operator associated to a system of three particles on a lattice by Tulkin Kh Rasulov

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Weyl-Type Theorems of Upper Triangular Relation Matrices by Yanyan Du, Junjie Huang

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A note on the discrete Schrödinger operator with a perturbed periodic potential by Beata Strack

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Spectral theory of C-symmetric non-selfadjoint differential operators of order 2n by Horst Behncke, Don Hinton

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Relatively bounded and compact perturbations of nth order differential operators by Terry G. Anderson

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Perron-Frobenius and Krein-Rutman theorems for tangentially positive operators by Kanigowski Adam, Kryszewski Wojciech

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