Weimin Han's A Posteriori Error Analysis via Duality Theory: With PDF

By Weimin Han

ISBN-10: 0387235361

ISBN-13: 9780387235363

This quantity presents a posteriori blunders research for mathematical idealizations in modeling boundary price difficulties, particularly these coming up in mechanical functions, and for numerical approximations of diverse nonlinear variational difficulties. the writer avoids giving the consequences within the so much basic, summary shape in order that it's more straightforward for the reader to appreciate extra truly the fundamental rules concerned. Many examples are integrated to teach the usefulness of the derived errors estimates.


This quantity is acceptable for researchers and graduate scholars in utilized and computational arithmetic, and in engineering.

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Extra info for A Posteriori Error Analysis via Duality Theory: With Applications in Modeling and Numerical Approximations

Example text

In this regard, for the Galerkin method, a key result is the following CCa's inequality. 28 Assume V is a Hilbert space, VN C V is a subspace, a ( . , is a bounded, V-elliptic bilinear form on V, and t? E V*. 47). ). CCa's inequality is a basis for convergence analysis and error estimations. As a simple consequence, we have the next convergence result. 28. Assume VN, c VN, c - . 17) converges. 38 A POSTERIORI ERROR ANALYSIS VIA DUALITY THEORY in V. 29, Ui>lVN, stands for the closure of Ui>lVN, inequality also serves a s a basis for error estimates.

The sets A and B are separated ifthere exist k' E V * ,k' # 0 and a E R such that q ~I )a 5 e ( ~ ) v u E A, E B. 15 (Separation of convex sets) Let V bea real normedspace, A , B c V be non-empty and convex. (a) Zfint(A)n B = 0 and int(A) # 0, then A and B can be separated; fiuthermore, f ( u ) < a V u E int( A ) . (b) I f A f l B = 8 and either A and B are open or A is closed and B is compact, then A and B can be strictly separated. c. for some u E d o m ( f ) (hence it is possible f ( u ) = co).

On r and is denoted by v . Recall S d denotes the space of second order symmetric tensors on IRd, and the canonical inner products and corresponding norms on TRd and S d are We define the product spaces ~ ~ ( :=0 ( )~ ~ (and 0 H'(R) ) ) ~ := ( H ' ( R ) ) ~ equipped with the norms i v = J v i/:,n, k = 0 , l . The same notation v is used to denote the function and its trace on the boundary. For a vector v , we will use its normal component v, = v v and tangential component v, = v - v,v at a point on the boundary.

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A Posteriori Error Analysis via Duality Theory: With Applications in Modeling and Numerical Approximations by Weimin Han

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