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Bücher Englische Bücher Selected Chapters in the Calculus of Variations
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Selected Chapters in the Calculus of Variations
Jürgen Moser (Broschiert, Englisch)
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Beschreibung
0.1 Introduction These lecture notes describe a new development in the calculus of variations which is called Aubry-Mather-Theory. The starting point for the theoretical physicist Aubry was a model for the descrip tion of the motion of electrons in a two-dimensional crystal. Aubry investigated a related discrete variational problem and the corresponding minimal solutions. On the other hand, Mather… started with a specific class of area-preserving annulus mappings, the so-called monotone twist maps. These maps appear in mechanics as Poincare maps. Such maps were studied by Birkhoff during the 1920s in several papers. In 1982, Mather succeeded to make essential progress in this field and to prove the existence of a class of closed invariant subsets which are now called Mather sets. His existence theorem is based again on a variational principle. Although these two investigations have different motivations, they are closely re lated and have the same mathematical foundation. We will not follow those ap proaches but will make a connection to classical results of Jacobi, Legendre, Weier strass and others from the 19th century. Therefore in Chapter I, we will put together the results of the classical theory which are the most important for us. The notion of extremal fields will be most relevant. In Chapter II we will investigate variational problems on the 2-dimensional torus. We will look at the corresponding global minimals as well as at the relation be tween minimals and extremal fields. In this way, we will be led to Mather sets. 53,49 €
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Technische Daten
Erscheinungsdatum
23.05.2003
Sprache
Englisch
EAN
9783764321857
Herausgeber
Springer Basel
Serien- oder Bandtitel
Lectures in Mathematics. ETH Zürich
Sonderedition
Nein
Autor
Jürgen Moser
Seitenanzahl
134
Auflage
1
Einbandart
Broschiert
Schlagwörter
Calculus of Variations, Extremal fields, Global minimals, Minimal geodesics, Twist maps, Variational problems, calculus, compactness, differential equation, extrema, minimum, theorem
Thema-Inhalt
PBU - Optimierung
PBMP - Differentielle und Riemannsche Geometrie
Höhe
240 mm
Breite
17 cm
Hersteller: Springer Nature Customer Service Center GmbH, ProductSafety@springernature.com
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