Математика и физика. Mathematics & Physics. 2023 16 (4)

 

Ресурсы коллекции

  • Modeling of Electric Field Impact on a Cholesteric Liquid Crystal Layer 

    Sadovskii, Vladimir M.; Sadovskaya, Oxana V.; Smolekho, Irina V.; Садовский, Владимир М.; Садовская, Оксана В.; Смолехо, Ирина В. (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    A new mathematical model is proposed to describe the spatial static state of a cholesteric liquid crystal. The model is constructed with the assumption of elastic resistance of a liquid crystal under weak mechanical ...

  • Series of Hypergeometric Type and Discriminants 

    Quang Khanh Phan; Куанг Хань Фан (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    The monomial of solutions to a reduced system of algebraic equations are a hypergeometric type series. We are spreading the Horn–Karpranov result (for hypergeometric series) to the case of series of hypergeometric type

  • Local Asymptotic Normality of Statistical Experiments in an Inhomogeneous Competing Risks Model under Random Censoring on the Right 

    Nurmukhamedova, Nargiza; Нурмухамедова, Наргиза (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    The local asymptotic normality property of the likelihood ratio statistic in the competing risk model that corresponds to inhomogeneous and randomly right-censored observations is proved in the paper

  • Analog of theWeierstrass Theorem and the Blaschke Product for A(z)-analytic Functions 

    Ne’matillayeva, Muhayyo; Khursanov, Shohruh; Нематиллаева, Мухайе; Хурсанов, Шохрух (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    We consider A(z)-analytic functions in the case when A(z) is an antiholomorpic function. For A(z)-analytic functions analogs of the Weierstrass theorem and of the Blaschke theorem are proved

  • Strongly Algebraically Closed MV-algebras 

    Molkhasi, Ali; Молхаси, Али (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    The aim of this paper is to fully characterize strongly algebraic closed MV-algebras, extending a result of Lacava. Moreover we provide some computation relating orbit algebras, Wajsberg algebras and Lukasiewicz semirings

  • On Generation of the Groups GLn(Z) and PGLn(Z) by Three Involutions, Two of which Commute 

    Markovskaya, Irina A.; Nuzhin, Yakov N.; Марковская, Ирина А.; Нужин, Яков Н. (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    It is proved that the general linear group GLn(Z) (its projective image PGLn(Z) respectively) over the ring of integers Z is generated by three involutions, two of which commute, if and only if n > 5 (if n = 2 and n > 5 ...

  • Some New Fixed Point Results in b-metric Space with Rational Generalized Contractive Condition 

    Laouadi, Besma; Taki Eddine Oussaeif; Benaoua, Leila; Guran, Liliana; Radenovic, Stojan; Лауади, Бесма; Таки Эддин Уссаиф; Бенауа, Лейла; Гуран, Лилиана; Раденович, Стоян (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    In this paper, we improve and generalize several results in fixed point theory to the b-metric space. Where we confirm the existence of the fixed point for self mapping T satisfying some rational contractive conditions. ...

  • Almost Inner Derivations of Some Leibniz Algebras 

    Kurbanbaev, Tuuelbay K.; Курбанбаев, Тууелбай К. (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    The present paper is devoted to almost inner derivations of thin and solvable Leibniz algebras. Namely, we consider a thin Lie algebra, solvable Lie algebra with nilradical natural graded filifform Lie algebra, natural ...

  • On a Note on Ap´ery-like Series with an Application 

    Jayarama Prathima; Arjun Kumar Rathie; Джаярама Пратима; Арджун Кумар Рати (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    The goal of this note is to use a hypergeometric series strategy to build many Ap´ery-like series. As an application, we obtain several results due to Sherman

  • On the Convergence Exponent of the Special Integral of the Tarry Problem for a Quadratic Polynomial 

    Ikromov, Isroil A.; Safarov, Akbar R.; Absalamov, Akmal T.; Икромов, Исроил А.; Сафаров, Акбар Р.; Абсаламов, Акмал Т. (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    In this paper it is considered the summation problem for trigonometric integrals with quadratic phase. This problem was considered in the papers [7–9] in particular cases. Our results generalize the results of those ...

  • A Logarithmic Barrier Approach Via Majorant Function for Nonlinear Programming 

    Boutheina Fellahi; Bachir Merikhi; Бутейна Феллахи; Бачир Мерихи (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    In this paper, we are interested in solving an optimization nonlinear programming problem using a logarithmic barrier interior point method, in which the penalty term is taken as a vector r 2 Rn +. The descent direction ...

  • Creeping Three-dimensional Convective Motion in a Layer with Velocity Field of a Special Type 

    Azanov, Andrei A.; Азанов, Андрей А. (Сибирский федеральный университет. Siberian Federal University, 2023-08)
    Problem of three-dimensional motion of a heat-conducting fluid in a channel with solid parallel walls is considered. Given temperature distribution is maintained on solid walls. The liquid temperature depends quadratically ...