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L² Approaches in Several Complex Variables

L² Approaches in Several Complex Variables: Development of Oka-Cartan Theory by L² Estimates for the d-bar Operator
Springer | Mathematics | October 30, 2015 | ISBN-10: 4431557466 | 196 pages | pdf | 2.38 mb

by Takeo Ohsawa (Author)
Presents quite recent research works, all of very high standard, in the field of several complex variables
Selects only extremely important materials from the conventional basic theory of complex analysis and manifold theory
Requires no more than a one-semester introductory course in complex analysis as a prerequisite for understanding

About this book
The purpose of this monograph is to present the current status of a rapidly developing part of several complex variables, motivated by the applicability of effective results to algebraic geometry and differential geometry. Highlighted are the new precise results on the L² extension of holomorphic functions.
In Chapter 1, the classical questions of several complex variables motivating the development of this field are reviewed after necessary preparations from the basic notions of those variables and of complex manifolds such as holomorphic functions, pseudoconvexity, differential forms, and cohomology. In Chapter 2, the L² method of solving the d-bar equation is presented emphasizing its differential geometric aspect. In Chapter 3, a refinement of the Oka-Cartan theory is given by this method. The L² extension theorem with an optimal constant is included, obtained recently by Z. Błocki and by Q.-A. Guan and X.-Y. Zhou separately. In Chapter 4, various results on the Bergman kernel are presented, including recent works of Maitani-Yamaguchi, Berndtsson, and Guan-Zhou. Most of these results are obtained by the L² method. In the last chapter, rather specific results are discussed on the existence and classification of certain holomorphic foliations and Levi flat hypersurfaces as their stables sets. These are also applications of the L² method obtained during these 15 years.

Number of Illustrations and Tables
5 illus.
Several Complex Variables and Analytic Spaces
Algebraic Geometry
Differential Geometry
Functional Analysis

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Tags: Approaches, Several, Complex, Variables

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