Solution of initial value problems in classes of generalized analytic functions: The method of scales of Banach spaces (Teubner-Texte zur Mathematik) - Softcover

Tutschke, Wolfgang

Softcover

ISBN 10: 3322005046 ISBN 13: 9783322005045

Publisher: B.G. Teubner, 1989

Synopsis

The purpose of the present book is to solve initial value problems in classes of generalized analytic functions as well as to explain the functional-analytic background material in detail. From the point of view of the theory of partial differential equations the book is intend­ ed to generalize the classicalCauchy-Kovalevskayatheorem, whereas the functional-analytic background connected with the method of successive approximations and the contraction-mapping principle leads to the con­ cept of so-called scales of Banach spaces: 1. The method of successive approximations allows to solve the initial value problem du CTf = f(t,u), (0. 1) u(O) = u , (0. 2) 0 where u = u(t) ist real o. r vector-valued. It is well-known that this method is also applicable if the function u belongs to a Banach space. A completely new situation arises if the right-hand side f(t,u) of the differential equation (0. 1) depends on a certain derivative Du of the sought function, i. e. , the differential equation (0,1) is replaced by the more general differential equation du dt = f(t,u,Du), (0. 3) There are diff. erential equations of type (0. 3) with smooth right-hand sides not possessing any solution to say nothing about the solvability of the initial value problem (0,3), (0,2), Assume, for instance, that the unknown function denoted by w is complex-valued and depends not only on the real variable t that can be interpreted as time but also on spacelike variables x and y, Then the differential equation (0.

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Language Notes

Text: English
Introduction: French, German, Russian

Edition details

• Publisher: B.G. Teubner
• Publication date: 1989
• ISBN 10: 3322005046
• ISBN 13: 9783322005045
• Binding: Perfect Paperback
• Language: English
• Edition number: 1
• Number of pages: 188