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Found 302 Documents (Results 1–100)

On representations of groups and algebras in spaces with indefinite metric. (English. Russian original) Zbl 07798853

J. Math. Sci., New York 278, No. 1, 91-107 (2024); translation from Sovrem. Mat., Fundam. Napravl. 67, No. 2, 295-315 (2021).
MSC:  46K10 22D25 47B50
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Fixed point results for condensing operators via measure of non-compactness. (English. Russian original) Zbl 07630577

Vestn. St. Petersbg. Univ., Math. 55, No. 3, 347-352 (2022); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 9(67), No. 3, 544-551 (2022).
MSC:  47Hxx 54Hxx 54Exx
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To the problem of small oscillations of a system of two viscoelastic fluids filling immovable vessel: model problem. (English. Russian original) Zbl 07599131

J. Math. Sci., New York 265, No. 6, 888-912 (2022); translation from Sovrem. Mat., Fundam. Napravl. 66, No. 2, 182-208 (2020).
MSC:  47Axx 47Bxx 47-XX
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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-XX
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Sadovskii-type fixed point results for edge-preserving mappings. (English) Zbl 1460.47025

Bourhim, A. (ed.) et al., Linear and multilinear algebra and function spaces. International conference algebra and related topics (ICART 2018), Mohammed V University, Rabat, Morocco, July 2–5, 2018. Providence, RI: American Mathematical Society (AMS). Contemp. Math. 750, 153-162 (2020).
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The extended Legendre transform and related variational principles. (English. Russian original) Zbl 1448.46060

Math. Notes 107, No. 3, 369-382 (2020); translation from Mat. Zametki 107, No. 3, 323-340 (2020).
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Higher-order Bessel equations integrable in elementary functions. (English. Russian original) Zbl 07123796

J. Math. Sci., New York 241, No. 4, 379-395 (2019); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 140, 3-17 (2017).
MSC:  47E05 34L10 34B30
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Abstract mixed boundary-value and spectral conjugation problems and their applications. (English. Russian original) Zbl 1435.35149

J. Math. Sci., New York 239, No. 5, 608-643 (2019); translation from Sovrem. Mat., Fundam. Napravl. 61, 67-102 (2016).
MSC:  35J25 47A56
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Commuting differential operators of rank 2 with rational coefficients. (English. Russian original) Zbl 1408.13068

Funct. Anal. Appl. 52, No. 3, 203-213 (2018); translation from Funkts. Anal. Prilozh. 52, No. 3, 53-65 (2018).
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Criteria of the uniqueness of solutions and well-posedness of inverse source problems. (English. Russian original) Zbl 1391.35292

J. Math. Sci., New York 230, No. 6, 907-949 (2018); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 133 (2017).
MSC:  35P05 35R30 47F05
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Analytic operator Lipschitz functions in the disk and a trace formula for functions of contractions. (English. Russian original) Zbl 06835367

Funct. Anal. Appl. 51, No. 3, 185-203 (2017); translation from Funkts. Anal. Prilozh. 51, No. 3, 33-55 (2017).
MSC:  47A56
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