Rational Sphere Maps

This monograph systematically explores the theory of rational maps between spheres in complex Euclidean spaces and its connections to other areas of mathematics. Synthesizing research from the last forty years, the author aims for accessibility by balancing abstract concepts with concrete examples. Numerous computations are worked out in detail, and more than 100 optional exercises are provided throughout for readers wishing to better understand challenging material.The text begins by presenting core concepts in complex analysis and a wide variety of results about rational sphere maps. The subsequent chapters discuss combinatorial and optimization results about monomial sphere maps, groups associated with rational sphere maps, relevant complex and CR geometry, and some geometric properties of rational sphere maps. Fifteen open problems appear in the final chapter, with references provided to appropriate parts of the text. These problemswill encourage readers to apply the material to future research.Rational Sphere Maps will be of interest to researchers and graduate students studying several complex variables and CR geometry. Mathematicians from other areas, such as number theory, optimization, and combinatorics, will also find the material appealing.See the author's research web page for a list of typos, clarifications, etc.: https://faculty.math.illinois.edu/~jpda/research.html

Synthesizes research from the past 40 years on rational sphere maps Explores connections with other areas of mathematics, such as combinatorics, optimization, and number theory Includes several computational examples worked out in detail

Auteur

John P. D'Angelo, PhD, is a Professor in the Department of Mathematics at the University of Illiniois at Urbana-Champaign, USA

Résumé

"This monographs endeavors to provide analogous interesting features relevant to this subject. In particular, it explores the recent developments in the theory of rational sphere maps between complex spheres. It also establishes well the interrelation of this theory in several other relevant fields and its wide area of application. This monograph pays notable attention to computational aspects of the theory. The examples provided in each chapter explain well the theory from this constructive point of view." (Masoud Sabzevari, zbMATH 1485.32001, 2022) "Many exercises are interspersed throughout the book to keep the reader interested and give a nice break to simply reading through. They are well worth thinking about. The book should be a good fit for a beginning graduate student who has finished their comprehensive or qualifying exams and is looking for a problem to study. ... It is also a good read for an expert in a related field searching for new problems to study." (Jirí Lebl, Mathematical Reviews, May, 2022)

Contenu
Complex Euclidean Space.- Examples and Properties of Rational Sphere Maps.- Monomial Sphere Maps.- Monomial Sphere Maps and Linear Programming.- Groups Associated with Holomorphic Mappings.- Elementary Complex and CR Geometry.- Geometric Properties of Rational Sphere Maps.- List of Open Problems.