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＜電子ブック＞
Numerical Verification Methods and Computer-Assisted Proofs for Partial Differential Equations / by Mitsuhiro T. Nakao, Michael Plum, Yoshitaka Watanabe
(Springer Series in Computational Mathematics. ISSN:21983712 ; 53)

版	1st ed. 2019.
出版者	(Singapore : Springer Nature Singapore : Imprint: Springer)
出版年	2019
本文言語	英語
大きさ	XIII, 467 p. 59 illus., 17 illus. in color : online resource
著者標目	*Nakao, Mitsuhiro T author Plum, Michael author Watanabe, Yoshitaka author SpringerLink (Online service)
件　名	LCSH:Numerical analysis LCSH:Computer science -- Mathematics  全ての件名で検索 LCSH:Differential equations FREE:Numerical Analysis FREE:Mathematical Applications in Computer Science FREE:Differential Equations
一般注記	1. Basic principle of the verification -- 2. Newton-type approaches in finite dimension -- 3. Infinite dimensional Newton-type method -- 4. Applications to the computer-assisted proof in analysis -- 5. Evolutional equations -- 6. Eigenvalue enclosures for selfadjoint operators -- 7. Abstract formulation F(u) = 0, and the basic theorem -- 8. Strong solutions for second-order problems -- 9. Weak solutions for second-order problems -- 10. Weak solutions for fourth-order problems -- 11. Parameter-dependent problems -- 12. Non-selfadjoint eigenvalue problems -- 13. Some other methods In the last decades, various mathematical problems have been solved by computer-assisted proofs, among them the Kepler conjecture, the existence of chaos, the existence of the Lorenz attractor, the famous four-color problem, and more. In many cases, computer-assisted proofs have the remarkable advantage (compared with a “theoretical” proof) of additionally providing accurate quantitative information. The authors have been working more than a quarter century to establish methods for the verified computation of solutions for partial differential equations, mainly for nonlinear elliptic problems of the form -∆u=f(x,u,∇u) with Dirichlet boundary conditions. Here, by “verified computation” is meant a computer-assisted numerical approach for proving the existence of a solution in a close and explicit neighborhood of an approximate solution. The quantitative information provided by these techniques is also significant from the viewpoint of a posteriori error estimates for approximate solutions of the concerned partial differential equations in a mathematically rigorous sense. In this monograph, the authors give a detailed description of the verified computations and computer-assisted proofs for partial differential equations that they developed. In Part I, the methods mainly studied by the authors Nakao and Watanabe are presented. These methods are based on a finite dimensional projection and constructive a priori error estimates for finite element approximations of the Poisson equation. In Part II, the computer-assisted approaches via eigenvalue bounds developed by the author Plum are explained in detail. The main task of this method consists of establishing eigenvalue bounds for the linearization of the corresponding nonlinear problem at the computed approximate solution. Some brief remarks on other approaches are also given in Part III. Each method in Parts I and II is accompanied by appropriate numerical examples that confirm the actualusefulness of the authors’ methods. Also in some examples practical computer algorithms are supplied so that readers can easily implement the verification programs by themselves HTTP:URL=https://doi.org/10.1007/978-981-13-7669-6

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