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＜電子ブック＞
Cartesian Currents in the Calculus of Variations II : Variational Integrals / by Mariano Giaquinta, Guiseppe Modica, Jiri Soucek
(Ergebnisse der Mathematik und ihrer Grenzgebiete. 3. Folge / A Series of Modern Surveys in Mathematics. ISSN:21975655 ; 38)

版	1st ed. 1998.
出版者	(Berlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer)
出版年	1998
本文言語	英語
大きさ	XXIV, 700 p : online resource
著者標目	*Giaquinta, Mariano author Modica, Guiseppe author Soucek, Jiri author SpringerLink (Online service)
件　名	LCSH:Mathematical optimization LCSH:Calculus of variations LCSH:Mathematical analysis LCSH:Mathematical physics LCSH:Geometry FREE:Calculus of Variations and Optimization FREE:Analysis FREE:Theoretical, Mathematical and Computational Physics FREE:Geometry
一般注記	1. Regular Variational Integrals -- 2. Finite Elasticity and Weak Diffeomorphisms -- 3. The Dirichlet Integral in Sobolev Spaces -- 4. The Dirichlet Energy for Maps into S2 -- 5. Some Regular and Non Regular Variational Problems -- 6. The Non Parametric Area Functional -- Symbols Non-scalar variational problems appear in different fields. In geometry, for in­ stance, we encounter the basic problems of harmonic maps between Riemannian manifolds and of minimal immersions; related questions appear in physics, for example in the classical theory of a-models. Non linear elasticity is another example in continuum mechanics, while Oseen-Frank theory of liquid crystals and Ginzburg-Landau theory of superconductivity require to treat variational problems in order to model quite complicated phenomena. Typically one is interested in finding energy minimizing representatives in homology or homotopy classes of maps, minimizers with prescribed topological singularities, topological charges, stable deformations i. e. minimizers in classes of diffeomorphisms or extremal fields. In the last two or three decades there has been growing interest, knowledge, and understanding of the general theory for this kind of problems, often referred to as geometric variational problems. Due to the lack of a regularity theory in the non scalar case, in contrast to the scalar one - or in other words to the occurrence of singularities in vector valued minimizers, often related with concentration phenomena for the energy density - and because of the particular relevance of those singularities for the problem being considered the question of singling out a weak formulation, or completely understanding the significance of various weak formulations becames non trivial HTTP:URL=https://doi.org/10.1007/978-3-662-06218-0

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