
Notions of Convexity
Lars Hörmander(Author)
Birkhauser Boston Inc (Publisher)
Published on 27. December 2006
Book
Paperback/Softback
VIII, 414 pages
978-0-8176-4584-7 (ISBN)
Description
The term convexity used to describe these lectures given at the Univer sity of Lund in 1991-92 should be understood in a wide sense. Only Chap ters I and II are devoted to convex sets and functions in the traditional sense of convexity. The following chapters study other kinds of convexity which occur in analysis. Most prominent is the pseudo-convexity (plurisubh- monicity) in the theory of functions of several complex variables discussed in Chapter IV. It relies on the theory of subharmonic functions in R^, so Chapter III is devoted to subharmonic functions in R"^ for any n. Existence theorems for constant coefficient partial differential operators in R'^ are re lated to various kinds of convexity conditions, depending on the operator. Chapter VI gives a survey of the rather incomplete results which are known on their geometrical meaning. There are also natural classes of "convex" functions related to subgroups of the linear group, which specialize to sev eral of the notions already mentioned. They are discussed in Chapter V. The last chapter. Chapter VII, is devoted to the conditions for solvability of microdifferential equations, which can also be considered as a branch of convexity theory. The whole chapter is an exposition of a part of the thesis of J.-M. Trepreau.
More details
Series
Edition
Reprint of the 1st ed. 1994
Language
English
Place of publication
Boston
United States
Target group
Professional and scholarly
Research
Product notice
Paperback (trade)
Unsewn / adhesive bound
Illustrations
VIII, 414 p.
Dimensions
Height: 236 mm
Width: 156 mm
Thickness: 27 mm
Weight
601 gr
ISBN-13
978-0-8176-4584-7 (9780817645847)
DOI
10.1007/978-0-8176-4585-4
Schweitzer Classification
Other editions
Additional editions


Lars Hörmander
Notions of Convexity
Book
11/1994
Birkhauser Boston Inc
€80.14
Article exhausted; check different version
Content
Convex Functions of One Variable.- Convexity in a Finite-Dimensional Vector Space.- Subharmonic Functions.- Plurisubharmonic Functions.- Convexity with Respect to a Linear Group.- Convexity with Respect to Differential Operators.- Convexity and Condition (.?).