## Found 1,901 Documents (Results 1–100)

100
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### Existence and multiplicity of eigenvalues for some double-phase problems involving an indefinite sign reaction term. (English)Zbl 07541790

MSC:  35P30 49R05
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### Approximate $$\theta$$-multipliers on Banach algebras. (English)Zbl 07529136

MSC:  47A10 46J10
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### Almost weighted composition operators between Banach function algebras. (English)Zbl 07499390

MSC:  46J10 46J20 47B48
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### Topics on continuous inverse algebras. (English)Zbl 07490806

MSC:  46H05 46H20
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### Essential spectra of weighted composition operators induced by elliptic automorphisms. (English)Zbl 07489511

MSC:  47B33 46E15 47B48
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### Schrödinger operator with decreasing potential in a cylinder. (English. Russian original)Zbl 1480.35306

St. Petersbg. Math. J. 33, No. 1, 155-178 (2022); translation from Algebra Anal. 33, No. 1, 213-245 (2021).
MSC:  35P25 35P15 35J10
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### The spectral theorem for normal operators on a Clifford module. (English)Zbl 07452163

MSC:  47A10 47A60
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### Characterizations of a commutative semisimple modular annihilator Banach algebra through its socle. (English)Zbl 07469777

MSC:  47B48 47A10 46H05
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### Relations between two parts of the spectrum of a Schrödinger operator and other remarks on the absolute continuity of the spectrum in a typical case. (English)Zbl 1480.81049

Exner, Pavel (ed.) et al., Partial differential equations, spectral theory, and mathematical physics. The Ari Laptev anniversary volume. Berlin: European Mathematical Society (EMS). EMS Ser. Congr. Rep., 355-365 (2021).
MSC:  81Q10 47F10 47A10
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### Absolute continuity of the spectrum of a periodic 3D magnetic Schrödinger operator with singular electric potential. (English. Russian original)Zbl 1478.35155

Math. Notes 110, No. 4, 497-510 (2021); translation from Mat. Zametki 110, No. 4, 507-523 (2021).
MSC:  35P05 35J10 35J25
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### Volterra operators between limits of Bergman-type weighted spaces of analytic functions. (English)Zbl 1484.47077

MSC:  47G10 46A11 46E10
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### On occurrence of resonances from multiple eigenvalues of the Schrödinger operator in a cylinder with distant perturbations. (English. Russian original)Zbl 1473.35034

J. Math. Sci., New York 258, No. 1, 1-12 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 163, 3-14 (2019).
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### The Kachurovskij spectrum of Lipschitz continuous nonlinear block operator matrices. (English)Zbl 07377753

MSC:  47J10 47H30
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### Eigenvalue problems and their perturbations for the weighted $$(p,q)$$-Laplacian. (English)Zbl 1479.35387

MSC:  35J60 35J92
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### A note on the spectrum of some composition operators on Korenblum type spaces. (English)Zbl 07369334

MSC:  47B33 46E10 47A10
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### On the Menger and almost Menger properties in locales. (English)Zbl 1477.06029

MSC:  06D22 54C05 54D20
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### Topics on a class of pseudo-Michael algebras. (English)Zbl 1474.46090

MSC:  46H05 46H20
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### Generalized peripherally multiplicative maps between real Lipschitz algebras with involution. (English)Zbl 1474.46105

MSC:  46J10 47B48 47B33
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### Necessary and sufficient conditions for assignability of dichotomy spectra of continuous time-varying linear systems. (English)Zbl 1461.93175

MSC:  93B55 93B05 93C05
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### Stationary state computation for nonlinear Dirac operators. (English)Zbl 07506615

MSC:  35-XX 81-XX
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### To the spectral theory of quantum graphs with summable matrix potentials. (English)Zbl 07415539

MSC:  81-XX 47-XX 34-XX

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### Spectra of the upper triangular band matrix $$U(r;0;s)$$ on the Hahn space. (English)Zbl 1474.47014

MSC:  47A10 47B37
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### Invariant graphs and spectral type of Schrödinger operators. (English)Zbl 1472.35106

MSC:  35J10 37J40 35P05
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### Measure-preserving rank one transformations. (English. Russian original)Zbl 1465.37004

Trans. Mosc. Math. Soc. 2020, 229-259 (2020); translation from Tr. Mosk. Mat. O.-va 81, No. 2, 281-318 (2020).
MSC:  37A10 28D05
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### Waves trapped by semi-infinite Kirchhoff plate at ultra-low frequencies. (English. Russian original)Zbl 1460.74049

Mech. Solids 55, No. 8, 1328-1339 (2020); translation from Prikl. Mat. Mekh. 84, No. 3, 327-340 (2020).
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### Scattering of particles bounded to an infinite planar curve. (English)Zbl 1453.81025

MSC:  81Q10 81U99 47B10
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### Threshold resonances and virtual levels in the spectrum of cylindrical and periodic waveguides. (English. Russian original)Zbl 1458.35031

Izv. Math. 84, No. 6, 1105-1160 (2020); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 84, No. 6, 73-130 (2020).
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### Hybrid normed ideal perturbations of $$n$$-tuples of operators. II: Weak wave operators. (English)Zbl 1455.47029

Curto, Raul E. (ed.) et al., Operator theory, operator algebras and their interactions with geometry and topology. Ronald G. Douglas memorial volume. Proceedings of the international workshop on operator theory and applications (IWOTA 2018), Shanghai, China, July 23–27, 2018. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 278, 501-510 (2020).
MSC:  47L30 47L20 47A13
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### Stability of absolutely continuous spectra of self-adjoint linear relations under perturbations. (Chinese. English summary)Zbl 1463.47014

MSC:  47A06 47A10 47A55

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### On the existence and multiplicity of eigenvalues for a class of double-phase non-autonomous problems with variable exponent growth. (English)Zbl 1463.35398

MSC:  35P30 49R05 58C40
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### Constructing a trapped mode at low frequencies in an elastic waveguide. (English. Russian original)Zbl 1447.74020

Funct. Anal. Appl. 54, No. 1, 31-44 (2020); translation from Funkts. Anal. Prilozh. 54, No. 1, 41-57 (2020).
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### On ergodic flows with simple Lebesgue spectrum. (English. Russian original)Zbl 1448.37002

Sb. Math. 211, No. 4, 594-615 (2020); translation from Mat. Sb. 211, No. 4, 123-144 (2020).
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### Diagonalization of the finite Hilbert transform on two adjacent intervals: the Riemann-Hilbert approach. (English)Zbl 1452.44004

MSC:  44A15 47A10
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MSC:  35J10
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### Spectral properties of some complex Jacobi matrices. (English)Zbl 1441.47039

MSC:  47B36 47A10
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### Sequence spaces. Topics in modern summability theory. (English)Zbl 1468.46003

Mathematics and its Applications: Modelling, Engineering, and Social Sciences. Boca Raton, FL: CRC Press (ISBN 978-0-367-81917-0/hbk; 978-1-032-17319-1/pbk; 978-1-003-01511-6/ebook). xx, 292 p. (2020).
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### On compact perturbations of Hankel operators and commutators of Toeplitz and Hankel operators. (English)Zbl 07151050

MSC:  47B35 47L80 46J10
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### Strange behavior of natural oscillations of an elastic body with a blunted peak. (English. Russian original)Zbl 1457.74083

Mech. Solids 54, No. 5, 694-708 (2019); translation from Prikl. Mat. Mekh. 83, No. 2, 265-281 (2019).
MSC:  74H45 74H65
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### The point, residual and continuous spectrum of $$3 \times 3$$ upper triangular operator matrices. (Chinese. English summary)Zbl 1449.47013

MSC:  47A10 47A05 47A08

### On closed subalgebras of $$C_B(X)$$. (English)Zbl 1447.46041

Reviewer: Mart Abel (Tartu)
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### The Fučík spectrum as two regular curves. (English)Zbl 1450.34020

Area, Iván (ed.) et al., Nonlinear analysis and boundary value problems. NABVP 2018, Santiago de Compostela, Spain, September 4–7, 2018. Proceedings of the international conference. Dedicated to Juan J. Nieto on the occasion of his 60th birthday. Cham: Springer. Springer Proc. Math. Stat. 292, 177-198 (2019).
MSC:  34B08 34B09 34B10
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### Dynamic bifurcation of Cahn-Hilliard equation. (Chinese. English summary)Zbl 1449.35041

MSC:  35B32 35B41
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### ‘Blinking’ and ‘gliding’ eigenfrequencies of oscillations of elastic bodies with blunted cuspidal sharpenings. (English. Russian original)Zbl 1458.35410

Sb. Math. 210, No. 11, 1633-1662 (2019); translation from Mat. Sb. 210, No. 11, (2019).
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### Well-posedness of third order differential equations in Hölder continuous function spaces. (English)Zbl 1434.34057

MSC:  34G10 47A10 46E15
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### Toeplitz operators with piecewise continuous symbols on the Hardy space $$H^1$$. (English)Zbl 07114513

MSC:  47B35 30H10
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### Eigenvalues, absolute continuity and localizations for periodic unitary transition operators. (English)Zbl 1423.35265

MSC:  35P05 47A55 58J50
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### Multiple solutions for eigenvalue problems involving an indefinite potential and with $$(p_1(x), p_2(x))$$ balanced growth. (English)Zbl 1438.35302

MSC:  35P30 49R05 58C40
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### Absence of eigenvalues for quasiperiodic Schrödinger type operators. (English)Zbl 1419.37048

MSC:  37H15 58J51
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### Some spectra properties of unbounded $$2\times2$$ upper triangular operator matrices. (English)Zbl 07089127

MSC:  47A10 46C05
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### Extended states for the Schrödinger operator with quasi-periodic potential in dimension two. (English)Zbl 1442.35003

Memoirs of the American Mathematical Society 1239. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-3543-1/pbk; 978-1-4704-5069-4/ebook). v, 139 p. (2019).
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### Uni-asymptotic linear systems and Jacobi operators. (English)Zbl 1480.47061

MSC:  47D06 47B36 81Q10
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### Level repulsion for Schrödinger operators with singular continuous spectrum. (English)Zbl 07068315

MSC:  47E05 34L05
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### The Dixmier-Douady classes of certain groupoid $$C^*$$-algebras with continuous trace. (English)Zbl 1438.46061

MSC:  46L05 46L55
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### Noncompact complete Riemannian manifolds with dense eigenvalues embedded in the essential spectrum of the Laplacian. (English)Zbl 1430.58022

MSC:  58J50 35P15 35J10
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### Absence of singular continuous spectrum for perturbed discrete Schrödinger operators. (English)Zbl 07027360

MSC:  47-XX 35-XX
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### On exact solutions of Hankel equations. (English. Russian original)Zbl 06993666

St. Petersbg. Math. J. 30, No. 1, 123-148 (2019); translation from Algebra Anal. 30, No. 1, 170-207 (2018).
MSC:  47B35
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### Ideals in $$C_B(X)$$ arising from ideals in $$X$$. (English)Zbl 1428.46032

Reviewer: Mati Abel (Tartu)
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### Spectral spaces. (English)Zbl 1455.54001

New Mathematical Monographs 35. Cambridge: Cambridge University Press (ISBN 978-1-107-14672-3/hbk; 978-1-316-54387-0/ebook). xvii, 633 p. (2019).
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