Zobrazeno 1 - 10 of 22 pro vyhledávání: '"Yu I Sapronov"'
1
Application of normalized key functions in a problem of branching of periodic extremals
Autor: Elena Derunova, Yu. I. Sapronov
Publikováno v: Russian Mathematics. 59:9-18
In this paper we construct a procedure of approximate calculation and analysis of branches of bifurcating solutions to a periodic variational problem. The goal of the work is a study of bifurcation of cycles in dynamic systems in cases of double reso
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::977ae60bed859e15c1ed72b59afaa532
https://doi.org/10.3103/s1066369x15080022
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2
Cellular Complexes for Thermodynamic Potential of Ferroelectrics
Autor: B. M. Darinskiy, Yu. I. Sapronov
Publikováno v: Ferroelectrics. 444:9-17
The topological method of investigation of regularities at phase transitions in ferroelectric crystals and the nonlinear phenomena, based on representations about cellular complexes of system of special points of non-equilibrium thermodynamic potenti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c95d30c9e8d2cb19f8945722e7e422e7
https://doi.org/10.1080/00150193.2013.785858
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3
Formation of nonsmoothness lines in optimization of screw pairs in screw pumps
Autor: M. I. Kovaleva, V. A. Kostin, Yu. I. Sapronov
Publikováno v: Russian Mathematics. 56:44-53
Computer modeling of screw pairs in screw pumps reveals the formation of nonsmoothness lines on the screw surface (with the growth of the height of the helical tooth) conjugate to the smooth helical surface. The mathematical explanation of the appear
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ed58b862fcc9b5ab3d7ae799e797e9a1
https://doi.org/10.3103/s1066369x12040068
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5
Bifurcations of Critical Orbits of SO(2)-invariant Fredholm Functionals at Critical Points with Double Resonances
Autor: Yu. I. Sapronov, E.V. Derunova
In this paper we consider the problem of bifurcation of extremalsof SO(2)-invariant (i.e., with circular symmetry) Fredholm functionalnear a steady-state point with a double-resonance (i.e., with two independentresonance relations). The main method o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41808d12b8064cc4f35da594e9d8ef5d
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8
Phase transitions in crystals characterized by polarization and deformation components of the order parameter
Autor: V. V. Shalimov, B. M. Darinskii, Yu. I. Sapronov
Publikováno v: Ferroelectrics. 265:31-42
By the method of Landau thermodynamics a possibility of realization of phase transitions characterized by a vector of polarization and a tensor of deformation in crystals of all classes of point group of symmetry is investigated. The analysis is carr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6442f67204dbea6149e33a8ac7551ba2
https://doi.org/10.1080/00150190208260602
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9
Global comparison of finite-dimensional reduction schemes in smooth variational problems
Autor: Yu. I. Sapronov, S. L. Tsarev
Publikováno v: Mathematical Notes. 67:631-638
A new criterion for global smooth equivalence of a pair of key functions corresponding to a smooth functional in the calculus of variations for a given pair of finite-dimensional reduction schemes is established. The statement is presented in abstrac
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0bfaa4f3785ff36f6b0a6642d1d16e6c
https://doi.org/10.1007/bf02676336
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