Математика и физика. Mathematics & Physics. 2020 13 (1)

 

Ресурсы коллекции

  • Application of DMA 242 C for Quasi-Static Measurements of Piezoelectric Properties of Solids 

    Turchin, Pavel P.; Turchin, Vladimir I.; Yurkevich, Sergey V.; Sukhodaev, Pavel O.; Raikova, Irina S.; Турчин, Павел П.; Турчин, Владимир И.; Юркевич, Сергей В.; Суходаев, Павел О.; Райкова, Ирина С. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    An experimental device for quasi-static measurements of piezoelectric moduli dijk, based on the possibilities of precision variations in mechanical stresses with the device DMA 242 C in the frequency range 0-100 Hz has ...

  • Similarity in the Far Swirling Momentumless TurbulentWake 

    Shmidt, Alexey V.; Шмидт, Алексей В. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    A self–similar solution to one model of the far momentumless swirling turbulent wake is proposed in the paper

  • Hypergeometric Series and the Mellin-Barnes Integrals for Zeros of a System of Laurent Polynomials 

    Kulikov, Vladimir R.; Куликов, Владимир Р. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    In the article we present a criterion for convergence of the Mellin-Barnes integral for zeros of a system of Laurent polynomials. Also we give a hypergeometric series for these zeros

  • Physical Basis of Quasi-optimal Seismoacoustic Pulse Generating for Geophysical Prospecting in Shallow Water and Transit Zones. Part 2. The Layout of Aqueous Seismic Source and the Results of Experiments 

    Kudinov, Danil S.; Maykov, Oleg A.; Balandin, Pavel V.; Кудинов, Данил С.; Майков, Олег А.; Баландин, Павел В. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    The article discusses theoretical aspects of seismic wave excitation of in the aquatic environ- ment, addresses the problems of instrumental implementation of a fundamentally new source of seismic vibrations that can ...

  • Minimal Proper Quasifields with Additional Conditions 

    Kravtsova, Olga V.; Кравцова, Ольга В. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    We investigate the finite semifields which are distributive quasifields, and finite near-fields which are associative quasifields. A quasifield Q is said to be a minimal proper quasifield if any of its sub-quasifield H ...

  • Analytic Continuation for Solutions to the System of Trinomial Algebraic Equations 

    Antipova, Irina A.; Kleshkova, Ekaterina A.; Kulikov, Vladimir R.; Антипова, Ирина А.; Клешкова, Екатерина А.; Куликов, Владимир Р. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    In the paper, we deal with the problem of getting analytic continuations for the monomial function associated with a solution to the reduced trinomial algebraic system. In particular, we develop the idea of applying the ...

  • Berry Phase for Time-Dependent Coupled Harmonic Oscillators in the Noncommutative Phase Space via Path Integral Techniques 

    Khiari, Leila; Boudjedaa, Tahar; Makhlouf, Abdenacer; Tayeb Meftah, Mohammed; Хиари, Лейла; Буджедаа, Тахар; Махлуф, Абденасер; Мохамед Таеб Мефта (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    The purpose of this paper is the description of Berry’s phase, in the Euclidean Path Integral formalism, for 2D quadratic system: two time dependent coupled harmonic oscillators. This treatment is achieved by using the ...

  • Fundamental Solutions for a Class of Multidimensional Elliptic Equations with Several Singular Coefficients 

    Ergashev, Tuhtasin G.; Эргашев, Тухтасин Г. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    The main result of the present paper is the construction of fundamental solutions for a class of multidimensional elliptic equations with several singular coefficients. These fundamental solutions are directly connected ...

  • On Application of Prandtl-Obukhov Formula in the Numerical Model of the Turbulent Layer Depth Dynamics 

    Belolipetskii, Victor M.; Genova, Svetlana N.; Белолипецкий, Виктор М.; Генова, Светлана Н. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    A numerical simulation of the penetration of the turbulent layer in a stably stratified fluid under the action of tangential stress was performed. For the coefficient of vertical turbulent exchange, the Prandtl–Obukhov ...

  • On the Asymptotic Behavior of the Conjugate Problem Describing a Creeping Axisymmetric Thermocapillary Motion 

    Andreev, Victor K.; Magdenko, Evgeniy P.; Андреев, Виктор К.; Магденко, Евгений П. (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    In this paper the conditions for the law of temperature behavior on a solid cylinder wall describes, under which the solution of a linear conjugate inverse initial-boundary value problem describing a two-layer axisymmetric ...

  • A Degree Theory for Lagrangian Boundary Value Problems 

    Alsaedy, Ammar; Tarkhanov, Nikolai; Аль-Саеди, Аммар; Тарханов, Николай (Сибирский федеральный университет. Siberian Federal University, 2020-02)
    We study those nonlinear partial differential equations which appear as Euler-Lagrange equations of variational problems. On defining weak boundary values of solutions to such equations we initiate the theory of Lagrangian ...