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Found 27,113 Documents (Results 1–100)

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Ishkin, Kh. K.; Rezbayev, A. V.
On the Davies formula for the distribution of eigenvalues of a non-self-adjoint differential operator. (English. Russian original) Zbl 07308102
J. Math. Sci., New York 252, No. 3, 374-383 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 153, 84-93 (2018).
MSC:  47
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\textit{Kh. K. Ishkin} and \textit{A. V. Rezbayev}, J. Math. Sci., New York 252, No. 3, 374--383 (2021; Zbl 07308102); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 153, 84--93 (2018)
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Baibulov, I. V.; Budylin, A. M.; Levin, S. B.
The scattering problem of three one-dimensional short-range quantum particles involving bound states in pair subsystems. The coordinate asymptotics of the resolvent kernel and of the eigenfunctions of the absolutely continuous spectrum. (English. Russian original) Zbl 07297514
J. Math. Sci., New York 252, No. 5, 567-575 (2021); translation from Zap. Nauchn. Semin. POMI 483, 5-18 (2019).
MSC:  81U10 81V45 81Q10 34L40 34L20 47A10
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\textit{I. V. Baibulov} et al., J. Math. Sci., New York 252, No. 5, 567--575 (2021; Zbl 07297514); translation from Zap. Nauchn. Semin. POMI 483, 5--18 (2019)
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Borisov, D. I.
Perturbations of the continuous spectrum of a certain nonlinear two-dimensional operator sheaf. (English. Russian original) Zbl 07283007
J. Math. Sci., New York 252, No. 2, 135-146 (2021); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 13-24 (2018).
MSC:  47F05 35P05
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\textit{D. I. Borisov}, J. Math. Sci., New York 252, No. 2, 135--146 (2021; Zbl 07283007); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 152, 13--24 (2018)
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Charalambous, Nelia; Leal, Helton; Lu, Zhiqin
Spectral gaps on complete Riemannian manifolds. (English) Zbl 07315976
Van der Veken, Joeri (ed.) et al., Geometry of submanifolds. AMS special session in honor of Bang-Yen Chen’s 75th birthday, University of Michigan, Ann Arbor, Michigan, October 20–21, 2018. Providence, RI: American Mathematical Society (AMS) (ISBN 978-1-4704-5092-2/pbk; 978-1-4704-5666-5/ebook). Contemporary Mathematics 756, 57-67 (2020).
MSC:  53B35 53C25 53C40 53C42 53C43
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\textit{N. Charalambous} et al., Contemp. Math. 756, 57--67 (2020; Zbl 07315976)
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Hassi, Seppo; Wietsma, Hendrik Luit
Spectral decompositions of selfadjoint relations in Pontryagin spaces and factorizations of generalized Nevanlinna functions. (English) Zbl 07310487
Alpay, Daniel (ed.) et al., Complex function theory, operator theory, Schur analysis and systems theory. A volume in honor of V. E. Katsnelson. Cham: Birkhäuser/Springer (ISBN 978-3-030-44818-9/hbk; 978-3-030-44819-6/ebook). Operator Theory: Advances and Applications 280, 515-534 (2020).
MSC:  47B50 46C20 47A10 47A15
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\textit{S. Hassi} and \textit{H. L. Wietsma}, Oper. Theory: Adv. Appl. 280, 515--534 (2020; Zbl 07310487)
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Nazarov, S. A.
Threshold resonances and virtual levels in the spectrum of cylindrical and periodic waveguides. (English. Russian original) Zbl 07304907
Izv. Math. 84, No. 6, 1105-1160 (2020); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 84, No. 6, 73-130 (2020).
MSC:  35B25 35P05 35Q60 47A53 78A50 82D77
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\textit{S. A. Nazarov}, Izv. Math. 84, No. 6, 1105--1160 (2020; Zbl 07304907); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 84, No. 6, 73--130 (2020)
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Voiculescu, Dan-Virgil
Hybrid normed ideal perturbations of \(n\)-tuples of operators. II: Weak wave operators. (English) Zbl 07299694
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 (ISBN 978-3-030-43379-6/hbk; 978-3-030-43380-2/ebook). Operator Theory: Advances and Applications 278, 501-510 (2020).
MSC:  47L30 47L20 47A13
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\textit{D.-V. Voiculescu}, Oper. Theory: Adv. Appl. 278, 501--510 (2020; Zbl 07299694)
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