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＜電子ブック＞
L² Approaches in Several Complex Variables : Development of Oka–Cartan Theory by L² Estimates for the d-bar Operator / by Takeo Ohsawa
(Springer Monographs in Mathematics. ISSN:21969922)

版	1st ed. 2015.
出版者	Tokyo : Springer Japan : Imprint: Springer
出版年	2015
本文言語	英語
大きさ	IX, 196 p. 5 illus : online resource
著者標目	*Ohsawa, Takeo author SpringerLink (Online service)
件　名	LCSH:Functions of complex variables LCSH:Algebraic geometry LCSH:Geometry, Differential LCSH:Functional analysis FREE:Several Complex Variables and Analytic Spaces FREE:Algebraic Geometry FREE:Differential Geometry FREE:Functional Analysis
一般注記	Part I Holomorphic Functions and Complex Spaces -- Convexity Notions -- Complex Manifolds -- Classical Questions of Several Complex Variables -- Part II The Method of L² Estimates -- Basics of Hilb ert Space Theory -- Harmonic Forms -- Vanishing Theorems -- Finiteness Theorems -- Notes on Complete Kahler Domains (= CKDs) -- Part III L² Variant of Oka-Cartan Theory -- Extension Theorems -- Division Theorems -- Multiplier Ideals -- Part IV Bergman Kernels -- The Bergman Kernel and Metric -- Bergman Spaces and Associated Kernels -- Sequences of Bergman Kernels -- Parameter Dependence -- Part V L² Approaches to Holomorphic Foliations -- Holomorphic Foliation and Stable Sets -- L² Method Applied to Levi Flat Hypersurfaces -- LFHs in Tori and Hopf Surfaces 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 HTTP:URL=https://doi.org/10.1007/978-4-431-55747-0

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