Results 91 to 100 of about 1,325 (220)
, 2001 For a limited number of matter fields, the discontinuity of the transverse gauge field propagator can satisfy an exact sum rule. With controlled and limited gauge dependence, this supercconvergence relation is of physical interest.
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Derivative superconvergence of linear finite elements by recovery techniques
, 2004 The aim of this article is to investigate the superconvergence in derivative approximations of finite element solutions. We construct three kinds of derivative recovery formulas at the mesh points for linear, bilinear and quadrilateral finite elements ...
Zhang T(张铁) +2 more
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Superconvergence of finite element method for the Signorini problem
, 2007 In this paper, we study the superconvergence of the frictionless Signorini problem. When approximated by bilinear finite elements, by virtue of the information on the contact zone, we can derive a superconvergence rate of O(h32) under a proper regularity
Zhang, Shu-hua +5 more
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International Journal of Antennas and Propagation, 2016 Two curved targets are used to explore far-field superconvergence effects arising in numerical solutions of the electric-field and magnetic-field integral equations.
Andrew F. Peterson
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Journal of Inequalities and Applications, 2019 In this paper, we investigate a variational discretization approximation of parabolic bilinear optimal control problems with control constraints. For the state and co-state variables, triangular linear finite element and difference methods are used for ...
Yuelong Tang, Yuchun Hua
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Superconvergence in Galerkin finite element methods
, 1995 This book is essentially a set of lecture notes from a graduate seminar given at Cornell in Spring 1994. It treats basic mathematical theory for superconvergence in the context of second order elliptic problems.
Wahlbin, Lars B
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The coupled method for singularly perturbed Volterra integro-differential equations
Advances in Difference Equations, 2019 In this work a coupled (LDG-CFEM) method for singularly perturbed Volterra integro-differential equations with a smooth kernel is implemented. The existence and uniqueness of the coupled solution is given, provided that the source function and the kernel
Xia Tao, Yinghui Zhang
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Superconvergence For Second Order Triangular Mixed And Standard Finite Elements
, 1996 In this paper we will prove that both the second order Raviart-Thomas type mixed finite elements and the quadratic standard finite elements on regular and uniform triangular partitions, are superconvergent with respect to Fortin interpolation.
Jan H. Brandts
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Superconvergence and reduced integration in the finite element method
, 1978 The finite elements considered in this paper are those of the Serendipity family of curved isoparametric elements. There is given a detailed analysis of a superconvergence phenomenon for the gradient of approximate solutions to second order elliptic ...
Miloš Zlámal
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