نتایج جستجو برای: boundary value problemsfractional differentialequationsshannon waveletoperational matrix

تعداد نتایج: 1199283  

Journal: :international journal of nano dimension 0
a. oveysi sarabi department of mechanical engineering, east azerbaijan science and research branch, islamic azad university, tabriz, iran. a. ghanbari department of mechanical engineering, east azerbaijan science and research branch, islamic azad university, tabriz, iran.

due to high surface-to-volume ratio of nanoscale structures, surface stress effects have a significant influence on their behavior. in this paper, a two-dimensional problem for an elastic layer that is bonded to a rigid substrate and subjected to an inclined concentrated line load acting on the surface of the layer is investigated based on gurtin-murdoch continuum model to consider surface stre...

Journal: :bulletin of the iranian mathematical society 0
a. amini harandi university of shahrekord, iran

in this paper, using the fixed point theory in cone metric spaces, we prove the existence of a unique solution to a first-order ordinary differential equation with periodic boundary conditions in banach spaces admitting the existence of a lower solution.

Journal: :computational methods for differential equations 0
mohammad nabati basic of sciences, abadan faculty of petroleum engineering, petroleum university of technology, abadan, iran mahdi jalalvand department of mathematics, faculty of mathematical sciences and computer shahid chamran university, ahvaz, iran

sinc-galerkin method based upon double exponential transformation for solving troesch's problem was given in this study. properties of the sinc-galerkin approach were utilized to reduce the solution of nonlinear two-point boundary value problem to same nonlinear algebraic equations, also, the matrix form of the nonlinear algebraic equations was obtained.the error bound of the method was fo...

Journal: :Scholarpedia 2008

‎The spectral analysis of two classes of third order boundary value problems is investigated‎. ‎For every positive integer $m$ we construct two classes of regular third order boundary value problems with at most $2m+1$‎ ‎eigenvalues‎, ‎counting multiplicity‎. ‎These kinds of finite spectrum results are previously known only for even order boundary value problems‎.

Journal: :Numerische Mathematik 2015
Markus Faustmann Jens Markus Melenk Dirk Praetorius

We study the question of approximability for the inverse of the FEM stiffness matrix for (scalar) second order elliptic boundary value problems by blockwise low rank matrices such as those given by the H-matrix format introduced by Hackbusch (Computing 62(2):89–108, 1999). We show that exponential convergence in the local block rank r can be achieved. We also show that exponentially accurate LU...

2003
MEHDI DEHGHAN

Parabolic partial differential equations with nonlocal boundary specifications feature in the mathematical modeling of many phenomena. In this paper, numerical schemes are developed for obtaining approximate solutions to the initial boundary value problem for one-dimensional diffusion equation with a nonlocal constraint in place of one of the standard boundary conditions. The method of lines (M...

2011
Themistocles M. Rassias

This paper deals with the study of conditioning for three-point boundary value problems associated with first order matrix Lyapunov systems, with the help of Kronecker product of matrices. Further, we obtain the close relationship between the stability bounds of the problem on one hand , and the growth behavior of the fundamental matrix solution on the other hand.

, ,

At present study, effects of wall thickness and porosity on the conjugate free convection heat transfer inside a square cavity have been examined. Continuity, momentum and energy equations for fluid and solid matrix phases are governing equations in present work. Mentioned equations and related boundary conditions have been transformed into their non-dimensional forms. They are solved using fin...

2014
Fakhrodin Mohammadi

In this paper Chebyshev wavelet and their properties are employed for deriving Chebyshev wavelet operational matrix of fractional derivatives and a general procedure for forming this matrix is introduced. Then Chebyshev wavelet expansion along with this operational matrix are used for numerical solution of Bagley-Torvik boundary value problems. The error analysis and convergence properties of t...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید