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    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
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Similarity Methods for Differential Equations

Similarity Methods for Differential Equations

Bluman, G. W.
Cole, J. D.

Paperback

Series: Applied Mathematical Sciences, Book 13

General Mathematics

ISBN10: 0387901078
ISBN13: 9780387901077
Publisher: Springer
Published: Dec 2 1974
Pages: 333
Weight: 1.22
Height: 0.72 Width: 6.69 Depth: 9.61
Language: English
The aim of this book is to provide a systematic and practical account of methods of integration of ordinary and partial differential equations based on invariance under continuous (Lie) groups of trans- formations. The goal of these methods is the expression of a solution in terms of quadrature in the case of ordinary differential equations of first order and a reduction in order for higher order equations. For partial differential equations at least a reduction in the number of independent variables is sought and in favorable cases a reduction to ordinary differential equations with special solutions or quadrature. In the last century, approximately one hundred years ago, Sophus Lie tried to construct a general integration theory, in the above sense, for ordinary differential equations. Following Abel's approach for algebraic equations he studied the invariance of ordinary differential equations under transformations. In particular, Lie introduced the study of continuous groups of transformations of ordinary differential equations, based on the infinitesimal properties of the group. In a sense the theory was completely successful. It was shown how for a first-order differential equation the knowledge of a group leads immediately to quadrature, and for a higher order equation (or system) to a reduction in order. In another sense this theory is somewhat disappointing in that for a first-order differ- ential equation essentially no systematic way can be given for finding the groups or showing that they do not exist for a first-order differential equation.

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