Semigroups in Geometrical Function Theory / Edition 1

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This manuscript provides an introduction to the generation theory of nonlinear one-parameter semigroups on a domain of the complex plane in the spirit of the Wolff-Denjoy and Hille-Yoshida theories. Special attention is given to evolution equations reproduced by holomorphic vector fields on the unit disk. A dynamic approach to the study of geometrical properties of univalent functions is emphasized.
The book comprises six chapters. The preliminary chapter and chapter 1 give expositions to the theory of functions in the complex plane, and the iteration theory of holomorphic mappings according to Wolff and Denjoy, as well as to Julia and Caratheodory. Chapter 2 deals with elementary hyperbolic geometry on the unit disk, and fixed points of those mappings which are nonexpansive with respect to the Poincaré metric. Chapters 3 and 4 study local and global characteristics of holomorphic and hyperbolically monotone vector-fields, which yield a global description of asymptotic behavior of generated flows. Various boundary and interior flow invariance conditions for such vector-fields and their parametric representations are presented. Applications to univalent starlike and spirallike functions on the unit disk are given in Chapter 5. The approach described may also be useful for higher dimensions.
Audience: The book will be of interest to graduate students and research specialists working in the fields of geometrical function theory, iteration theory, fixed point theory, semigroup theory, theory of composition operators and complex dynamical systems.

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Editorial Reviews

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'The book is well written and elegantly structured. Also it subject is interesting and the figures included are suggestive. It is useful to student and postgraduate students who are interested in complex dynamic systems, as well as to all researchers specialized in complex analysis and differential equations.'
Zbl. MATH, 98:30001
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Product Details

  • ISBN-13: 9780792371113
  • Publisher: Springer Netherlands
  • Publication date: 7/31/2001
  • Edition description: 2001
  • Edition number: 1
  • Pages: 222
  • Product dimensions: 0.69 (w) x 6.14 (h) x 9.21 (d)

Table of Contents

Preface. Preliminaries. 1. The Wolff-Denjoy theory on the unit disk. 2. Hyperbolic geometry on the unit disk and fixed points. 3. Generation theory on the unit disk. 4. Asymptotic behavior of continuous flows. 5. Dynamical approach to starlike and spirallike functions. Bibliography. Author's and Subject Index. List of figures.

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