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检索条件"主题词=BOUNDARY value problems -- Numerical solutions"
274 条 记 录,以下是11-20 订阅
排序:
Solution to classes of inverse coefficient problems and problems with nonlocal conditions for parabolic equations
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DIFFERENTIAL EQUATIONS 2015年 第1期51卷 83-93页
作者: Aida-zade, K. R. Rahimov, A. B. Azerbaijan State Oil Acad Baku Azerbaijan Azerbaijan Natl Acad Sci Inst Control Syst Baku Azerbaijan
We study the numerical solution to inverse problems in which one reconstructs the coefficients of a parabolic equation depending only on one (space or time) variable. In particular, these classes of problems arise in ... 详细信息
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ANOTHER NOTE ON THE JOIN PROPERTY
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PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY 2015年 第9期143卷 4059-4072页
作者: Cai, Mingzhong Univ Wisconsin Dept Math Madison WI 53706 USA
We first prove two theorems on the low(2) degrees and the join property in the local structure D(<= 0'): An r.e. degree is low(2) if and only if it is bounded by an r.e. degree without the join property (in D(&... 详细信息
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RIGIDITY OF SCATTERING LENGTHS AND TRAVELLING TIMES FOR DISJOINT UNIONS OF STRICTLY CONVEX BODIES
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PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY 2015年 第9期143卷 3879-3893页
作者: Noakes, Lyle Stoyanov, Luchezar Univ Western Australia Crawley WA 6009 Australia
Obstacles K and L in R-d (d >= 2) are considered that are finite disjoint unions of strictly convex domains with C-3 boundaries. We show that if K and L have (almost) the same scattering length spectrum, or (almost... 详细信息
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Solution of a mixed boundary value problem for the biharmonic equation with finite weighted Dirichlet integral
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DIFFERENTIAL EQUATIONS 2015年 第4期51卷 487-501页
作者: Matevosyan, O. A. MFUA Grad Sch Sci Moscow Russia Moscow Univ Finance & Law Moscow Russia Russian Acad Sci VA Steklov Math Inst Moscow Russia
We study the uniqueness of the solution of a mixed boundary value problem for the biharmonic equation in the exterior of a compact set under the assumption that the generalized solution of that problem has a finite Di... 详细信息
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numerical APPROXIMATION OF FRACTIONAL POWERS OF ELLIPTIC OPERATORS
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MATHEMATICS OF COMPUTATION 2015年 第295期84卷 2083-2110页
作者: Bonito, Andrea Pasciak, Joseph E. Texas A&M Univ Dept Math College Stn TX 77843 USA
We present and study a novel numerical algorithm to approximate the action of T-beta := L-beta where L is a symmetric and positive definite unbounded operator on a Hilbert space H-0. The numerical method is based on a... 详细信息
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Stability and convergence of difference schemes approximating a nonlocal Steklov boundary value problem of the second class
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DIFFERENTIAL EQUATIONS 2015年 第1期51卷 94-106页
作者: Alikhanov, A. A. Kabardino Balkar State Univ Nalchik Russia
We consider finite-difference schemes for the heat equation with variable coefficients and nonlocal boundary conditions containing real parameters alpha, beta, and gamma. We obtain a priori estimates for the solution ... 详细信息
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Closed-form expression for a generalized solution in Wp1 of a mixed problem describing radially symmetric vibrations of a three-dimensional ball
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DIFFERENTIAL EQUATIONS 2015年 第1期51卷 47-53页
作者: Kurkina, A. V. Moscow MV Lomonosov State Univ Moscow Russia
For any p >= 1 and any time interval [0, T], we derive a closed-form expression for a generalized solution in W (p) (1) of a mixed problem describing the radially symmetric vibrations of a three-dimensional ball wi... 详细信息
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Solvability of the periodic problem for higher-order linear functional differential equations
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DIFFERENTIAL EQUATIONS 2015年 第5期51卷 571-585页
作者: Bravyi, E. I. Perm Natl Res Polytech Univ Perm Russia
We obtain necessary and sufficient conditions for the unique solvability of the periodic boundary value problem for a family of nth-order linear functional differential equations with pointwise constraints on the func... 详细信息
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Block elements and analytical solutions of boundary-value problems for sets of differential equations
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DOKLADY PHYSICS 2014年 第1期59卷 30-34页
作者: Babeshko, V. A. Evdokimova, O. V. Babeshko, O. M. Kuban State Univ Krasnodar 350640 Russia Russian Acad Sci Southern Res Ctr Rostov Na Donu 341004 Russia Southern Fed Univ Rostov Na Donu 344049 Russia
The article discusses the solutions of boundary-value problems for sets of differential equations using block elements and analytical form. Topics discussed include the general boundary-value problem described by the ... 详细信息
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Existence of solutions for nonlinear fractional q-difference integral equations with two fractional orders and nonlocal four-point boundary conditions
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JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS 2014年 第5期351卷 2890-2909页
作者: Ahmad, Bashir Nieto, Juan J. Alsaedi, Ahmed Al-Hutami, Hana King Abdulaziz Univ Fac Sci Dept Math Jeddah 21589 Saudi Arabia Univ Santiago de Compostela Fac Matemat Dept Anal Matemat Santiago De Compostela 15782 Spain
We investigate the existence of solutions for a nonlinear fractional q-difference integral equation (q-variant of the Langevin equation) with two different fractional orders and nonlocal four-point boundary conditions... 详细信息
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