Математика и физика. Mathematics & Physics. 2020 13 (4)

 

Ресурсы коллекции

  • On New Decomposition Theorems in some Analytic Function Spaces in Bounded Pseudoconvex Domains 

    Shamoyan, Romi F.; Tomashevskaya, Elena B.; Шамоян, Роми Ф.; Томашевская, Елена В. (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    We provide new sharp decomposition theorems for multifunctional Bergman spaces in the unit ball and bounded pseudoconvex domains with smooth boundary expanding known results from the unit ball. Namely we prove ...

  • The Study of the Fine Structure of Ti-Al Coatings on the Surface of Ti, Obtained by Mechanical Alloying 

    Sagdoldina, Zhuldyz B.; Rakhadilov, Baurzhan K.; Abylkalykova, Riza B.; Kveglis, Lyudmila I.; Shalaev, Pavel O.; Kozhanova, Rauan S.; Сагдолдина, Жулдыз Б.; Рахадилов, Бауржан К.; Абылкалыкова, Риза Б.; Квеглис, Людмила И.; Шалаев, Павел О.; Кожанова, Рауан С. (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    The work is devoted to the study of structural-phase transformations in composite coatings (Ti-Al)+Ti during mechanical alloying. The data on the structural-phase states of (Ti-Al)-Ti coatings after mechanical alloying ...

  • Generalized Contractions to Coupled Fixed Point Theorems in Partially Ordered Metric Spaces 

    Seshagiri Rao, N.; Kalyani, Karusala; Сешагири Рао, Н.; Каляни, Карусала (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    The purpose of this paper is to establish some coupled fixed point theorems for a self mapping satisfying certain rational type contractions along with strict mixed monotone property in a metric space endowed with partial ...

  • Structural Changes of Co Caused a Change of the Solution pH During Chemical Deposition 

    Podorozhnyak, Sergey A.; Chzhan, Anatoly V.; Maltsev, Vadim K.; Krayuhin, Ivan N.; Patrin, Gennady S.; Sakash, Irina Yu.; Подорожняк, Сергей А.; Чжан, Анатолий В.; Мальцев, Вадим К.; Краюхин, Иван Н.; Патрин, Геннадий С.; Сакаш, Ирина Ю. (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    The phase transformations of the Co lattice are discussed, which determine the anomalous changes in the magnetic properties of chemically deposited Co-P films obtained at various pH values. The coercivity of the Hc films ...

  • Algebraic Geometry over Heyting Algebras 

    Nouri, Mahdiyeh; Нури, Махдия (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    In this article, we study the algebraic geometry over Heyting algebras and we investigate the properties of being equationally Noetherian and qω-compact over such algebras

  • Lᵖ Regularity of the Solution of the Heat Equation with Discontinuous Coefficients 

    Kouicem, Selma; Chikouche, Wided; Кусем, Сельма; Чикуче, Видед (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    In this paper, we consider the transmission problem for the heat equation on a bounded plane sector in Lᵖ-Sobolev spaces. By Applying the theory of the sums of operators of Da Prato-Grisvard and Dore-Venni, we prove that ...

  • On Error Estimates in Sp for Cubature Formulas Exact for Haar Polynomials 

    Kirillov, Kirill A.; Кириллов, Кирилл А. (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    On the spaces Sp, an upper and lower estimates for the norm of the error functional cubature formulas possessing the Haar d-property are obtained for the n-dimensional case

  • Rate of the Almost Sure Convergence of a Generalized Regression Estimate Based on Truncated and Functional Data 

    Boudada, Halima; Leulmi, Sara; Kharfouch, Soumia; Будада, Халима; Леулми, Сара; Харфучи, Соумиа (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    In this paper, a nonparametric estimation of a generalized regression function is proposed. The real response random variable (r.v.) is subject to left-truncation by another r.v. while the covariate takes its values in ...

  • Centers and Limit Cycles of Generalized Kukles Polynomial Differential Systems: Phase Portraits and Limit Cycles 

    Belfar, Ahlam; Benterki, Rebiha; Белфар, Ахлам; Бентерки, Ребиха (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    In this work, we give the seven global phase portraits in the Poincar´e disc of the Kukles differential system given by x˙ = −y, y˙ = x + ax8 + bx4y4 + cy8, where x, y ∈ R and a, b, c ∈ R with a2 + b2 + c2 ̸= 0. Moreover, ...

  • On Estimation of Bivariate Survival Function from Random Censored Data 

    Abdushukurov, Abdurakhim A.; Muradov, Rustamjon S.; Абдушукуров, Абдурахим А.; Мурадов, Рустамжон С. (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    At present there are several approaches to estimate survival functions of vectors of lifetimes. However, some of these estimators are either inconsistent or not fully defined in the range of joint survival functions. ...

  • To the Question of Analytical Estimate of Evaporation Time of the Drop, Crossing Through the Heat Media 

    Gladkov, Sergey O.; Гладков, Сергей О. (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    Due to the kinetic approach the modelling description of the drop evaporation is offer. The main equation of the theory received due to the conservation law of dissipative functions of the vapor – liquid system. The ...

  • Magnetic and Structure Properties of CoPt-In₂O₃ Nanocomposite Films 

    Bykova, Liudmila E.; Myagkov, Victor G.; Zhigalov, Victor S.; Matsynin, Alexei A.; Velikanov, Dmitry A.; Bondarenko, Galina N.; Patrin, Gennady S.; Быкова, Людмила Е.; Мягков, Виктор Г.; Жигалов, Виктор С.; Мацынин, Алексей А.; Великанов, Дмитрий А.; Бондаренко, Галина Н.; Патрин, Геннадий С. (Сибирский федеральный университет. Siberian Federal University, 2020-08)
    The structural and magnetic properties of CoPt-In₂O₃ nanocomposite films formed by vacuum annealing of the In/(Co3O4 + Pt)/MgO film system in the temperature range of 100–800 ◦C have been investigated. The synthesized ...