Hormander, Lars

Notions of Convexity

Series: Modern Birkhauser Classics
Originally published as volume 127 in the series: Progress in Mathematics
1st ed. 1994. 2nd printing, 2007, VIII, 414 p., Softcover
ISBN: 978-0-8176-4584-7

About this book

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 Trepreaufs 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.

Table of contents

Preface.- 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.- Appendix.- Notes.- References.- Index of Notation.- Index

Myint-U, Tyn, Debnath, Lokenath

Linear Partial Differential Equations for Scientists and Engineers

Originally published by Prentice Hall, 1987
4th ed., 2007, XXII, 778 p., 79 illus., Hardcover
ISBN: 978-0-8176-4393-5

About this textbook

One of the most fundamental and active areas in mathematics, the theory of partial differential equations (PDEs) is essential in the modeling of natural phenomena. PDEs have a wide range of interesting and important applications in every branch of applied mathematics, physics, and engineering, including fluid dynamics, elasticity, and optics.

This significantly expanded fourth edition is designed as an introduction to the theory and applications of linear PDEs. The authors provide fundamental concepts, underlying principles, a wide range of applications, and various methods of solutions to PDEs. In addition to essential standard material on the subject, the book contains new material that is not usually covered in similar texts and reference books, including conservation laws, the spherical wave equation, the cylindrical wave equation, higher-dimensional boundary-value problems, the finite element method, fractional partial differential equations, and nonlinear partial differential equations with applications

Table of contents

Preface to the Fourth Edition
Preface to the Third Edition
Introduction
First-Order, Quasi-Linear Equations and Method of Characteristics
Mathematical Models
Classification of Second-Order Linear Equations
The Cauchy Problem and Wave Equations
Fourier Series and Integrals with Applications
Method of Separation of Variables
Eigenvalue Problems and Special Functions
Boundary-Value Problems and Applications
Higher-Dimensional Boundary-Value Problems
Green's Functions and Boundary-Value Problems
Integral Transform Methods with Applications
Nonlinear Partial Differential Equations with Applications
Numerical and Approximation Methods
Tables of Integral Transforms
Answers and Hints to Selected Exercises
Appendix: Some Special Functions and Their Properties
Bibliography
Index

Michael J. Wichura / University of Chicago

The Coordinate-Free Approach to Linear Models

Series: Cambridge Series in Statistical and Probabilistic Mathematics
Hardback (ISBN-13: 9780521868426)

This book is about the coordinate-free, or geometric, approach to the theory of linear models; more precisely, Model I ANOVA and linear regression models with non-random predictors in a finite-dimensional setting. This approach is more insightful, more elegant, more direct, and simpler than the more common matrix approach to linear regression, analysis of variance, and analysis of covariance models in statistics. The book discusses the intuition behind and optimal properties of various methods of estimating and testing hypotheses about unknown parameters in the models. Topics covered range from linear algebra, such as inner product spaces, orthogonal projections, book orthogonal spaces, Tjur experimental designs, basic distribution theory, the geometric version of the Gauss-Markov theorem, optimal and non-optimal properties of Gauss-Markov, Bayes, and shrinkage estimators under assumption of normality, the optimal properties of F-test, and the analysis of covariance and missing observations.

* Geometric approach to linear statistical models
* Optimality theory
* Many exercises and problems; detailed index

Contents

1. Introduction; 2. Topics in linear algebra; 3. Random vectors; 4. Gauss-Markov estimation; 5. Normal theory: estimation; 6. Normal theory: testing; 7. Analysis of covariance; 8. Missing observations.

Jacques-Louis Lions

Oeuvres choisies de Jacques-Louis Lions, 3 vols.

Ces trois volumes dfoeuvres choisies rassemblent une selection dfarticles et de monographies representatifs des travaux de recherche de Jacques-Louis Lions, regroupes par grands themes.

Jacques-Louis Lions a ete professeur au College de France, professeur a lfEcole polytechnique, president de lfINRIA, president du CNES et president de lfAcademie des Sciences. Il est decede le 17 mai 2001.

Son influence sur les mathematiques appliquees a ete considerable en France et dans le monde. Il a publie plus de 20 livres et pres de 600 articles dans les principales revues internationales de mathematiques. La SMAI (Societe de Mathematiques Appliquees et Industrielles) a pris lfinitiative de publier ses oeuvres choisies, et la SMF (Societe Mathematique de France) sfest associee a cette publication, qui a recu le soutien du Ministere de la Recherche.

Chaque volume est precede dfune breve introduction redigee par un membre du Comite Scientifique (Alain Bensoussan, Philippe G. Ciarlet, Roland Glowinski et Roger Temam) qui a selectionne les oeuvres retenues.


Les oeuvres choisies sont publiees par EDP Sciences en 3 volumes :

Equations aux derivees partielles Interpolation
(740 p) ISBN 2-86883-661-5
Controle Homogeneisation
(874 p) ISBN 2-86883-662-3
Analyse numerique Calcul scientifique Applications
(828 p) ISBN 2-86883-663-1