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Dal'nevostochnyi Matematicheskii Zhurnal最新文献

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The estimates of the approximation numbers of the Hardy operator acting in the Lorenz spaces in the case ${it {bf max}(r,s)leq q}$ 在这种情况下作用于Lorenz空间的Hardy算子的近似数的估计 ${it {bf max}(r,s)leq q}$
Dal'nevostochnyi Matematicheskii Zhurnal Pub Date : 2021-06-18 DOI: 10.47910/femj202107
E.N. Ломакина, M. Nasyrova, V. V. Nasyrov
{"title":"The estimates of the approximation numbers of the Hardy operator acting in the Lorenz spaces in the case ${it {bf max}(r,s)leq q}$","authors":"E.N. Ломакина, M. Nasyrova, V. V. Nasyrov","doi":"10.47910/femj202107","DOIUrl":"https://doi.org/10.47910/femj202107","url":null,"abstract":"In the paper conditions are found under which the compact operator $Tf(x)=varphi(x)int_0^ xf(tau)v(tau),dtau,$ $x>0,$ acting in weighted Lorentz spaces $T:L^{r,s}_{v} (mathbb{R^+})to L^{p,q}_{omega}(mathbb{R^+})$ in the domain $1<max (r,s)le min(p,q)<infty,$ belongs to operator ideals $mathfrak{S}^{(a)}_alpha$ and $mathfrak{E}_alpha$, $0<alpha<infty$. And estimates are also obtained for the quasinorms of operator ideals in terms of integral expressions which depend on operator weight functions.","PeriodicalId":388451,"journal":{"name":"Dal'nevostochnyi Matematicheskii Zhurnal","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131152333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On linear continuous operators on C_p-spaces 关于c_p空间上的线性连续算子
Dal'nevostochnyi Matematicheskii Zhurnal Pub Date : 2021-06-18 DOI: 10.47910/femj202104
A. Devyatkov, S.D. Shalaginov
{"title":"On linear continuous operators on C_p-spaces","authors":"A. Devyatkov, S.D. Shalaginov","doi":"10.47910/femj202104","DOIUrl":"https://doi.org/10.47910/femj202104","url":null,"abstract":"The paper describes the structure of a linear continuous operator on the space of continuous functions in the topology of pointwise convergence. The corresponding theorem is a generalization of A.V.Arkhangel'skii's theorem on the general form of a continuous linear functional on such spaces.","PeriodicalId":388451,"journal":{"name":"Dal'nevostochnyi Matematicheskii Zhurnal","volume":"273 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115240953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An algorithm for solving the boundary value problem of radiation heat transfer without boundary conditions for radiation intensity 无辐射强度边界条件的辐射传热边值问题求解算法
Dal'nevostochnyi Matematicheskii Zhurnal Pub Date : 2020-06-01 DOI: 10.47910/femj202012
A. Chebotarev, P. Mesenev
{"title":"An algorithm for solving the boundary value problem of radiation heat transfer without boundary conditions for radiation intensity","authors":"A. Chebotarev, P. Mesenev","doi":"10.47910/femj202012","DOIUrl":"https://doi.org/10.47910/femj202012","url":null,"abstract":"An optimization algorithm for solving the boundary value problem for the stationary equations of radiation-conductive heat transfer in the three-dimensional region is presented in the framework of the $ P_1 $ - approximation of the radiation transfer equation. The analysis of the optimal control problem that approximates the boundary value problem where they are not defined boundary conditions for radiation intensity. Theoretical analysis is illustrated by numerical examples.","PeriodicalId":388451,"journal":{"name":"Dal'nevostochnyi Matematicheskii Zhurnal","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128500033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
To the theory of synchronization of interacting pendulums oscillating in the parallel planes 在平行平面上振荡的相互作用钟摆的同步理论
Dal'nevostochnyi Matematicheskii Zhurnal Pub Date : 2020-06-01 DOI: 10.47910/femj202003
S. Gladkov, S. B. Bogdanova
{"title":"To the theory of synchronization of interacting pendulums oscillating in the parallel planes","authors":"S. Gladkov, S. B. Bogdanova","doi":"10.47910/femj202003","DOIUrl":"https://doi.org/10.47910/femj202003","url":null,"abstract":"The problem of interacting metal pendulums oscillating in parallel planes, the distance $b$ between the suspension points of which is fixed and equally, has been solved. The principle possibility of their synchronization is provided by taking into account two physical factors: 1. Effect of electromagnetic interaction between them and 2. Accounting for EM radiation of each pendulum, leading to non-linear attenuation. The system of nonlinear dynamic motion equations obtained by a strict mathematical path is analyzed, and their numerical solution is given. The article offers a new method for constructing the pairs of function which are holomorphic on the whole complex plane and satisfy functional equations such as the addition theorem for theta functions.","PeriodicalId":388451,"journal":{"name":"Dal'nevostochnyi Matematicheskii Zhurnal","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121134767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On Gauss and Kloosterman sums 关于高斯和Kloosterman和
Dal'nevostochnyi Matematicheskii Zhurnal Pub Date : 2020-06-01 DOI: 10.47910/femj202002
M. Avdeeva, N. V. Gorbatuk, N. Shulga
{"title":"On Gauss and Kloosterman sums","authors":"M. Avdeeva, N. V. Gorbatuk, N. Shulga","doi":"10.47910/femj202002","DOIUrl":"https://doi.org/10.47910/femj202002","url":null,"abstract":"In this paper we calculate averages by parameters of Kloosterman sums, which include Dirichlet characters. They appear when constructing arithmetic trace formulas in the theory of automorphic forms.","PeriodicalId":388451,"journal":{"name":"Dal'nevostochnyi Matematicheskii Zhurnal","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114360985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Features of mappings leading to a central field 指向中心字段的映射的特征
Dal'nevostochnyi Matematicheskii Zhurnal Pub Date : 2020-06-01 DOI: 10.47910/femj202006
M. Guzev
{"title":"Features of mappings leading to a central field","authors":"M. Guzev","doi":"10.47910/femj202006","DOIUrl":"https://doi.org/10.47910/femj202006","url":null,"abstract":"For a mechanical system with two degrees of freedom, it is shown that the condition of zeroing the Jacobian map depended on the interaction potential selects a central field that ensures this condition fulfillment. It has been hypothesized that, in the general case, the features of coordinate mappings lead to potentials that admit the existence of an motion integral additional to the energy.","PeriodicalId":388451,"journal":{"name":"Dal'nevostochnyi Matematicheskii Zhurnal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133136699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Heat flow in a one-dimensional semi-infinite harmonic lattice with an absorbing boundary 具有吸收边界的一维半无限调和晶格中的热流
Dal'nevostochnyi Matematicheskii Zhurnal Pub Date : 2020-06-01 DOI: 10.47910/femj202004
A. Gudimenko
{"title":"Heat flow in a one-dimensional semi-infinite harmonic lattice with an absorbing boundary","authors":"A. Gudimenko","doi":"10.47910/femj202004","DOIUrl":"https://doi.org/10.47910/femj202004","url":null,"abstract":"Traditionally, absorbing boundary conditions are used to limit the domains of numerical approximation of partial differential equations in infinite domains. In the present paper, the simplest of these conditions is used to obtain an analytical approximation of the solution to the problem of heat propagation in a one-dimensional infinite harmonic lattice consisting of two semi-infinite homogeneous sublattices with different mechanical characteristics.","PeriodicalId":388451,"journal":{"name":"Dal'nevostochnyi Matematicheskii Zhurnal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131154643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Thermodynamic properties of Heisenberg spin systems on a square lattice with the Dzyaloshinskii--Moriya interaction 具有Dzyaloshinskii- Moriya相互作用的方形晶格上海森堡自旋系统的热力学性质
Dal'nevostochnyi Matematicheskii Zhurnal Pub Date : 2020-06-01 DOI: 10.47910/femj202007
V. Kapitan, E. Vasiliev, Yuriy Shevchenko, A. Perzhu, D. Kapitan, A. Rybin, K. Soldatov, A. Makarov, R. Volotovskii, K. Nefedev
{"title":"Thermodynamic properties of Heisenberg spin systems on a square lattice with the Dzyaloshinskii--Moriya interaction","authors":"V. Kapitan, E. Vasiliev, Yuriy Shevchenko, A. Perzhu, D. Kapitan, A. Rybin, K. Soldatov, A. Makarov, R. Volotovskii, K. Nefedev","doi":"10.47910/femj202007","DOIUrl":"https://doi.org/10.47910/femj202007","url":null,"abstract":"We present results of numerical simulation of thermodynamics for array of Classical Heisenberg spins placed on 2D square lattice. By using Metropolis and Wang--Landau methods we show the temperature behaviour of system with competing Heisenberg and Dzyaloshinskii--Moriya interaction (DMI) in contrast with classical Heisenberg system. We show the process of nucleating of skyrmion depending on the value of external magnetic field.","PeriodicalId":388451,"journal":{"name":"Dal'nevostochnyi Matematicheskii Zhurnal","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120944214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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