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Field name	Details
Dewey Class	515.94
Title	Notions of Convexity
Title	([EBook]) / by Lars Hörmander.
Author	Hörmander, Lars
Other name(s)	SpringerLink (Online service)
Edition statement	Reprint of the 1994 edition
Publication	Boston, MA : Birkhäuser , 2007
Physical Details	VIII, 416 pages : online resource.
Series	Modern Birkhäuser classics
ISBN	9780817645854
Summary Note	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 (.?).: The first two chapters of this book are devoted to convexity in the classical sense, for functions of one and several real variables respectively. This gives a background for the study in the following chapters of related notions which occur in the theory of linear partial differential equations and complex analysis such as (pluri-)subharmonic functions, pseudoconvex sets, and sets which are convex for supports or singular supports with respect to a differential operator. In addition, the convexity conditions which are relevant for local or global existence of holomorphic differential equations are discussed, leading up to Trépreau’s theorem on sufficiency of condition (capital Greek letter Psi) for microlocal solvability in the analytic category. At the beginning of the book, no prerequisites are assumed beyond calculus and linear algebra. Later on, basic facts from distribution theory and functional analysis are needed. In a few places, a more extensive background in differential geometry or pseudodifferential calculus is required, but these sections can be bypassed with no loss of continuity. The major part of the book should therefore be accessible to graduate students so that it can serve as an introduction to complex analysis in one and several variables. The last sections, however, are written mainly for readers familiar with microlocal analysis.:
Contents note	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 (.?).
System details note	Online access to this digital book is restricted to subscription institutions through IP address (only for SISSA internal users)
Internet Site	http://dx.doi.org/10.1007/978-0-8176-4585-4
Links to Related Works	Subject References: Analysis (Mathematics). -- Global analysis (Mathematics) . Convex domains . Differential equations, Partial . Discrete groups . Functions of complex variables . Functions of real variables. -- Convex and Discrete Geometry . Partial differential equations. -- Potential theory (Mathematics) . Authors: Hörmander, Lars . Corporate Authors: SpringerLink (Online service) . Series: Modern Birkhäuser classics . Classification: 515.94 . 515.94 (DDC 22) .

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Notions of Convexity

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