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Found 74 Documents (Results 1–74)

Analytical-numerical method for analyzing small perturbations of geostrophic ocean currents with a general parabolic vertical profile of velocity. (English. Russian original) Zbl 1506.76201

Comput. Math. Math. Phys. 62, No. 12, 2058-2068 (2022); translation from Zh. Vychisl. Mat. Mat. Fiz. 62, No. 12, 2043-2053 (2022).
MSC:  76U60 76M45 86A05
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On the addition and multiplication theorems. (English) Zbl 06767995

Alpay, Daniel (ed.) et al., Recent advances in inverse scattering, Schur analysis and stochastic processes. A collection of papers dedicated to Lev Sakhnovich. Cham: Birkhäuser/Springer. Oper. Theory: Adv. Appl. 244, 315-339 (2015).
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On the Weyl-Titchmarsh and Livšic functions. (English) Zbl 1319.81037

Holden, Helge (ed.) et al., Spectral analysis, differential equations and mathematical physics: A Festschrift in honor of Fritz Gesztesy’s 60th birthday. Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-7574-2/hbk). Proceedings of Symposia in Pure Mathematics 87, 291-313 (2013).
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Algebras of operators in Banach spaces over the quaternion skew field and the octonion algebra. (English. Russian original) Zbl 1178.47057

J. Math. Sci., New York 144, No. 4, 4301-4366 (2007); translation from Sovrem. Mat. Prilozh. 35 (2005).
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Spectral analysis of differential operators with indefinite weights and a local point interaction. (English) Zbl 1138.47036

Förster, Karl-Heinz (ed.) et al., Operator theory in inner product spaces. Papers of the 4th workshop on operator theory in Krein spaces and applications, TU Berlin, Germany, December 17–19, 2004. Basel: Birkhäuser (ISBN 978-3-7643-8269-8/hbk). Operator Theory: Advances and Applications 175, 169-191 (2007).
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Similarity of indefinite Sturm–Liouville operators with singular potential to a self-adjoint operator. (English. Russian original) Zbl 1097.47045

Math. Notes 78, No. 1, 134-139 (2005); translation from Mat. Zametki 78, No. 1, 147-151 (2005).
MSC:  47E05 34B24 34L40
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On the similarity of operators of the type \(\text{sgn}\,x(-\frac{d^2}{dx^2}+c\delta)\) to a normal and a selfadjoint operator. (English. Russian original) Zbl 1057.47050

Math. Notes 74, No. 1, 127-131 (2003); translation from Mat. Zametki 74, No. 1, 134-139 (2003).
MSC:  47E05 47B25
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The Glazman-Krein-Naimark theorem for ordinary differential operators. (English) Zbl 0889.34067

Gohberg, I. (ed.) et al., New results in operator theory and its applications: the Israel M. Glazman memorial volume. Basel: Birkhäuser. Oper. Theory, Adv. Appl. 98, 118-130 (1997).
MSC:  34L40 34L05 34B05
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