Математика и физика. Mathematics & Physics. 2014 7 (1)

 

Ресурсы коллекции

  • Mean Value Theorem for a System of Differential Equations for the Stress Tensor and Pore Pressure 

    Zhabborov, Nasridin M.; Imomnazarov, Kholmatzhon Kh.; Жабборов, Насриддин М.; Имомназаров, Холматжон Х. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    A system of second-order differential equations for the stress tensor and pore pressure for the poroelasticity statics in the absence of mass forces and energy dissipation is obtained. The stress tensor is shown to be a ...

  • Three-dimensional Dynamics of the Earth’s Radiation Belt Protons During the Magnetic Storm 

    Smolin, Sergey V.; Смолин, Сергей В. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    The non-stationary three-dimensional mathematical model describing evolution of proton distribution function is offered. The distribution of the radiation belt protons on the dayside of the Earth’s magneto- sphere during ...

  • Analysis of Financial Time Series with Binary N-Grams Frequency Dictionaries 

    Sadovsky, Michael G.; Borovikov, Igor; Садовский, Михаил Г.; Боровиков, Игорь (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    The paper presents a novel approach to statistical analysis of financial time series. The approach is based on n-grams frequency dictionaries derived from the quantized market data. Such dictionaries are studied by ...

  • A Representation of Solution of the Identification Problem of the Coefficients at Second Order Operator in the Multi-Dimensional Parabolic Equations System 

    Romanenko, Galina V.; Романенко, Галина В. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    An identification problem of the coefficients at differential operator of second order and sum of lowest terms in system of multidimensional parabolic equations with Cauchy data was studied in this article. The theorems ...

  • On One Condition for the Decomposition of an Entire Function into an Infinite Product 

    Myschkina, Evgenyia K.; Мышкина, Евгения К. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    The aim of this paper is proof a decomposition of entire function of finite order of growth with given zero set into the infinite product

  • An Extremal Problem Related to Analytic Continuation 

    Makhmudov, Olimjan; Tarkhanov, Nikolai; Махмудов, Олимжан; Тарханов, Николай (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    We show that the usual variational formulation of the problem of analytic continuation from an arc on the boundary of a plane domain does not lead to a relaxation of this overdetermined problem. To attain such a relaxation, ...

  • Examples of Groups with the Same Number of Subgroups of Every Index 

    Parker, Chris W.; Kanchana, Atapattu A. C.; Паркер, Крис В.; Канчана, Атапату А.С. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    In this note we show that certain non-isomorphic free amalgamated products with cyclic amalgamated subgroup and the same type have the same number of subgroups of every index

  • Extremal Curves in the Conformal Space and in an Associated Bundle 

    Krivonosov, Leonid N.; Luk’yanov, Vyacheslav A.; Voloskova, Lubov V.; Кривоносов, Леонид Н.; Лукьянов,Вячеслав А.; Волоскова,Любовь В. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    Time-like and null extremal curves are computed in the conformal space for bundles with fibers P5 and P5 ^ P5

  • Group Analysis of Three-dimensional Equations of an Ideal Fluid in Terms of Trajectories and Weber Potential 

    Krasnova, Daria A.; Краснова, Дарья А. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    Lie group analysis of equations of an ideal fluid written in variables of trajectories and Weber’s potential was conducted. It was shown that the use of volume conserving arbitrary Lagrangian coordinates is in fact an ...

  • A Model of Averaged Molecular Viscosity for Turbulent Flow of Non-Newtonian Fluids 

    Gavrilov, Andrey A.; Rudyak, Valeriy Ya.; Гаврилов, Андрей А.; Рудяк, Валерий Я. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    A novel turbulence model for flows of viscoplastic fluid is presented. It is based on the Reynolds-Averaged approach. A closed model for the averaged viscosity that takes into account its nonlinear dependence on the ...

  • Nanodiamond Collective Electron States and their Localization 

    Denisov, Ivan A.; Zimin, Andrey A.; Bursill, Leslie A.; Belobrov, Peter I.; Денисов, Иван А.; Зимин, Андрей А.; Бурсилл, Лесли А.; Белобров, Петр И. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    The collective states despite their importance are rarely used to describe the electron structure of dielectric materials. The nature of the unrelated to impurities unpaired spins found experimentally in the nanodiamond ...

  • Groups Satisfying the Minimal Condition for Non-abelian Non-normal Subgroups 

    Chernikov, Nikolai S.; Черников, Николай С. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    In the present paper, we establish that in a great many large and extremely large classes of groups, the non-abelian groups satisfying the mentioned condition are exactly the non-abelian Chernikov groups and the non-abelian ...

  • The Influence of Uniform Pressure on Propagation of Acoustic Waves in Piezoelectric Layered Structures 

    Burkov, Sergey I.; Zolotova, Olga P.; Sorokin, Boris P.; Бурков, Сергей И.; Золотова, Ольга П.; Сорокин, Борис П. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    Basic equations and boundary conditions describing the propagation of acoustic waves in piezoelectric layered structures subjected to uniform pressure have been obtained. The propagation of dispersive acous- tic modes ...

  • P-Measure in the Class of m−wsh Functions 

    Abdullaev, Bakhrom I.; Абдуллаев, Бахром И. (Сибирский федеральный университет. Siberian Federal University., 2014-01)
    In this work we study the P-measure and P-capacity in the class of m−wsh functions and prove a number of their properties