Overview
- Serves as a textbook in lecture courses of function theory of several complex variables right after one variable
- Is based on Oka’s first coherence theorem and the Joku-Iko Principle
- Proves Levi's problem by Oka's original Fredholm integral equation
Part of the book series: Universitext (UTX)
Buy print copy
Tax calculation will be finalised at checkout
Keywords
- Levi problem
- Oka theory
- complex variables
- Oka’s First Coherence Theorem
- pseudcoconvex
- Cousin problem
- Oka's Jôku-Ikô Principle
About this book
This book provides a new, comprehensive, and self-contained account of Oka theory as an introduction to function theory of several complex variables, mainly concerned with the Three Big Problems (Approximation, Cousin, Pseudoconvexity) that were solved by Kiyoshi Oka and form the basics of the theory. The purpose of the volume is to serve as a textbook in lecture courses right after complex function theory of one variable. The presentation aims to be readable and enjoyable both for those who are beginners in mathematics and for researchers interested in complex analysis in several variables and complex geometry.
The nature of the present book is evinced by its approach following Oka’s unpublished five papers of 1943 with his guiding methodological principle termed the “Joku-Iko Principle”, where historically the Pseudoconvexity Problem (Hartogs, Levi) was first solved in all dimensions, even for unramified Riemann domains as well.
The method that is used in the book is elementary and direct, not relying on the cohomology theory of sheaves nor on the L2-∂-bar method, but yet reaches the core of the theory with the complete proofs.
Two proofs for Levi’s Problem are provided: One is Oka’s original with the Fredholm integral equation of the second kind combined with the Joku-Iko Principle, and the other is Grauert’s by the well-known “bumping-method” with L. Schwartz’s Fredholm theorem, of which a self-contained, rather simple and short proof is given. The comparison of them should be interesting even for specialists.
In addition to the Three Big Problems, other basic material is dealt with, such as Poincaré’s non-biholomorphism between balls and polydisks, the Cartan–Thullen theorem on holomorphic convexity, Hartogs’ separate analyticity, Bochner’s tube theorem, analytic interpolation, and others.
It is valuable for students and researchers alike to look into the original works of Kiyoshi Oka, which are not easy to find in books or monographs.
Authors and Affiliations
About the author
Bibliographic Information
Book Title: Basic Oka Theory in Several Complex Variables
Authors: Junjiro Noguchi
Series Title: Universitext
Publisher: Springer Singapore
eBook Packages: Mathematics and Statistics, Mathematics and Statistics (R0)
Copyright Information: The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024
Softcover ISBN: 978-981-97-2055-2Due: 03 July 2024
eBook ISBN: 978-981-97-2056-9Due: 03 July 2024
Series ISSN: 0172-5939
Series E-ISSN: 2191-6675
Edition Number: 1
Number of Pages: XVI, 221
Number of Illustrations: 17 b/w illustrations, 5 illustrations in colour