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Found 5,518 Documents (Results 1–100)

Euler continuity equation with high-order terms in time. (English. Russian original) Zbl 07800786

J. Math. Sci., New York 277, No. 5, 798-803 (2023); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 182, 95-100 (2020).
MSC:  14C99 76Q05
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Convergence of the projection-difference method for the approximate solution of a smoothly solvable parabolic equation with a weighted integral condition. (English. Russian original) Zbl 07794029

J. Math. Sci., New York 275, No. 5, 583-591 (2023); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 176, 61-69 (2020).
MSC:  65J10 65L70 35K90
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Optimal control of the initial condition in the problem of gas lifting. (English. Russian original) Zbl 07790683

J. Comput. Syst. Sci. Int. 62, No. 2, 296-303 (2023); translation from Izv. Ross. Akad. Nauk, Teor. Sist. Upr. 2023, No. 2, 156-163 (2023).
MSC:  93C20 49J20
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On some properties of semi-Hamiltonian systems arising in the problem of integrable geodesic flows on the two-dimensional torus. (English. Russian original) Zbl 1528.37048

Sib. Math. J. 64, No. 5, 1063-1075 (2023); translation from Sib. Mat. Zh. 64, No. 5, 881-894 (2023).
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Differential invariants of inviscid flows in pipes. (English) Zbl 07738945

Krasil’shchik, I. S. (ed.) et al., The diverse world of PDEs. Geometry and mathematical physics. Alexandre Vinogradov memorial conference. Diffieties, cohomological physics, and other animals, Independent University of Moscow and Moscow State University, Moscow, Russia, December 13–17, 2021. Providence, RI: American Mathematical Society (AMS). Contemp. Math. 788, 101-110 (2023).
MSC:  76M60 76B10
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First- and second-order necessary optimality conditions for a control problem described by nonlinear fractional difference equations. (English. Russian original) Zbl 1521.93086

Autom. Remote Control 84, No. 3, 187-195 (2023); translation from Avtom. Telemekh. 2023, No. 2, 54-65 (2023).
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