ISBN 9781466507197,The Divergence Theorem And Sets Of Finite Perimeter

The Divergence Theorem And Sets Of Finite Perimeter

Publisher:

Taylor & Francis

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ISBN 9781466507197
Publisher

Taylor & Francis

Publication Year 2012
ISBN-13

ISBN 9781466507197

ISBN-10 1466507195
Binding

Hardback

Number of Pages 248 Pages
Language (English)
Subject

Applied mathematics

This book is devoted to a detailed development of the divergence theorem. The framework is that of Lebesgue integration no generalized Riemann integrals of Henstock Kurzweil variety are involved.
In Part I the divergence theorem is established by a combinatorial argument involving dyadic cubes. Only elementary properties of the Lebesgue integral and Hausdorff measures are used. The resulting integration by parts is sufficiently general for many applications. As an example, it is applied to removable singularities of Cauchy Riemann, Laplace, and minimal surface equations.
The sets of finite perimeter are introduced in Part II. Both the geometric and analytic points of view are presented. The equivalence of these viewpoints is obtained via the functions of bounded variation. These functions are studied in a self-contained manner with no references to Sobolev s spaces. The coarea theorem provides a link between the sets of finite perimeter and functions of bounded variation.
The general divergence theorem for bounded vector fields is proved in Part III. The proof consists of adapting the combinatorial argument of Part I to sets of finite perimeter. The unbounded vector fields and mean divergence are also discussed. The final chapter contains a characterization of the distributions that are equal to the flux of a continuous vector field.
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