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Found 2,256 Documents (Results 1–100)

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On regular solvability of a boundary value problem for a fourth order operator differential equation on a finite segment. (English) Zbl 07619478

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On the spectrum of a non-self-adjoint quasiperiodic operator. (English. Russian original) Zbl 07503272

Dokl. Math. 104, No. 3, 326-331 (2021); translation from Dokl. Ross. Akad. Nauk, Mat. Inform. Protsessy Upr. 501, 16-21 (2021).
MSC:  47B28 47A10
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Spectral expansions of non-self-adjoint generalized Laguerre semigroups. (English) Zbl 07492804

Memoirs of the American Mathematical Society 1336. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-4936-0/pbk; 978-1-4704-6752-4/ebook). v, 182 p. (2021).
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Perspectives on general left-definite theory. (English) Zbl 1496.47040

Gesztesy, Fritz (ed.) et al., From operator theory to orthogonal polynomials, combinatorics, and number theory. A volume in honor of Lance Littlejohn’s 70th birthday. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 285, 69-89 (2021).
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On the spectral properties of the Bloch-Torrey equation in infinite periodically perforated domains. (English) Zbl 07438892

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., 177-196 (2021).
MSC:  47B28 47B93
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Critical magnetic field for 2D magnetic Dirac-Coulomb operators and Hardy inequalities. (English) Zbl 1480.81044

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., 41-63 (2021).
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On the operator Jensen-Mercer inequality. (English) Zbl 1494.47027

Bastos, M. Amélia (ed.) et al., Operator theory, functional analysis and applications. Proceedings of the 30th international workshop on operator theory and its applications, IWOTA 2019, Lisbon, Portugal, July 22–26, 2019. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 282, 483-493 (2021).
MSC:  47A63 47A64
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Time evolution in quantum systems and stochastics. (English) Zbl 1471.81029

Paranjape, M. B. (ed.) et al., Quantum theory and symmetries. Proceedings of the 11th international symposium, Montréal, Canada, July 1–5, 2019. Cham: Springer. CRM Ser. Math. Phys., 523-532 (2021).
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Schur-Weyl duality and the product of randomly-rotated symmetries by a unitary Brownian motion. (English) Zbl 07362258

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