Steen Markvorsen, Maung Min-Oo

Global Riemannian Geometry: Curvature and Topology

2003. 96 pages. Softcover
ISBN 3-7643-2170-9
English


The book contains a clear exposition of two contemporary topics in modern differential geometry:

distance geometric analysis on manifolds, in particular, comparison theory for distance functions in spaces which have well defined bounds on their curvature is applied to study the Laplace operator on minimal submanifolds
the application of the Lichnerowicz formula for Dirac operators to the study of Gromov's invariants to measure the K-theoretic size of a Riemannian manifold.

It is intended for both graduate students and researchers who want to get a quick and modern introduction to these topics.

Table of contents

Distance Geometric Analysis on Manifolds (Steen Markvorsen) (.-) The Dirac Operator in Geometry and Physics (Maung Min-Oo)

Yuri B. Suris, Technische Universitat Berlin

The Problem of Integrable Discretization: Hamiltonian Approach

2003. 1092 pages. Hardcover
Progress in Mathematics, vol.219
ISBN 3-7643-6995-7
English

The book explores the theory of discrete integrable systems, with an emphasis on the following general problem: how to discretize one or several of independent variables in a given integrable system of differential equations, maintaining the integrability property? This question (related in spirit to such a modern branch of numerical analysis as geometric integration) is treated in the book as an immanent part of the theory of integrable systems, also commonly termed as the theory of solitons.

Among several possible approaches to this theory, the Hamiltonian one is chosen as the guiding principle. A self-contained exposition of the Hamiltonian (r-matrix, or "Leningrad") approach to integrable systems is given, culminating in the formulation of a general recipe for integrable discretization of r-matrix hierarchies. After that, a detailed systematic study is carried out for the majority of known discrete integrable systems which can be considered as discretizations of integrable ordinary differential or differential-difference (lattice) equations. This study includes, in all cases, a unified treatment of the correspondent continuous integrable systems as well. The list of systems treated in the book includes, among others: Toda and Volterra lattices along with their numerous generalizations (relativistic, multi-field, Lie-algebraic, etc.), Ablowitz-Ladik hierarchy, peakons of the Camassa-Holm equation, Garnier and Neumann systems with their various relatives, many-body systems of the Calogero-Moser and Ruijsenaars-Schneider type, various integrable cases of the rigid body dynamics. Most of the results are only available from recent journal publications, many of them are new.

Thus, the book is a kind of encyclopedia on discrete integrable systems. It unifies the features of a research monograph and a handbook. It is supplied with an extensive bibliography and detailed bibliographic remarks at the end of each chapter. Largely self-contained, it will be accessible to graduate and post-graduate students as well as to researchers in the area of integrable dynamical systems. Also those involved in real numerical calculations or modelling with integrable systems will find it very helpful.

Table of contents
I. General Theory (.-) Hamiltonian Mechanics (-) R-matrix Hierarchies (-) II. Lattice Systems (.-) Toda Lattice (-) Volterra Lattice (-) Newtonian Equations of the Toda Type (-) Relativistic Toda Lattice (-) Relativistic Volterra Lattice (-) Newtonian Equations of the Relativistic Toda Type (-) Explicit Discretizations for Toda Systems (-) Explicit Discretizations of Newtonian Toda Systems (-) Bruschi-Ragnisco Lattice (-) Multi-field Toda-like Systems (-) Multi-field Relativistic Toda Systems (-) Belov-Chaltikian Lattices (-) Multi-field Volterra-like Systems (-) Multi-field Relativistic Volterra Systems (-) Bogoyavlensky Lattices (-) Ablowitz-Ladik Hierarchy (-) III. Systems of Classical Mechanics (.-) Peakons System (-) Standard-like Discretizations (-) Lie-algebraic Toda Systems (-) Garnier System (-) Henon-Heiles System (-) Neumann System (-) Lie-algebraic Generalizations of the Garnier Systems (-) Integrable Cases of Rigid Body Dynamics (-) Systems of Calogero-Moser Type (-) Bibliography (.-) Notation (.-) Index

Titu Andreescu, American Mathematics Competition-University of Nebraska, Lincoln, NE
Zuming Feng, Phillips Exeter Academy, Exeter, NH

A Path to Combinatorics for Undergraduates
Counting Strategies

224 pages , 6 1/8 x 9 , 40 illus., paperback
ISBN:3-7643-4288-9, published 2003
expected release date: 10/12/2003

ABOUT THIS BOOK

A Path to Combinatorics for Undergraduates' is unique in its creative approach and presentation of material: unconventional, essay-type, non-routine combinatorial examples followed by a number of carefully selected challenging problems and extensive discussions of their solutions. New mathematical tools and methods are acquired, thanks to the interplay between well-organized combinatorial concepts and practical problems that bridge ordinary high school permutation/combination examples and exercises.

A good foundation in combinatorics is provided in the early chapters that cover ideas in combinatorial geometry, e.g, Sylvester's problem, convexity, covering, dissections, and Euclidean Ramsey theorems. Later chapters deal with concepts in set theory, number theory and group theory--- for example, cardinality, the Chinese Remainder Theorem, modulo operations, affine projections, all of which are innovatively implemented in combinatorial type problems. Lastly, problems in the language of combinatorics are translated into the language of graph theory.

This book is intended for anyone who wants to broaden his or her mathematical horizons. It serves as a solid stepping stone for more advanced combinatorics studies in related mathematical science fields or in computer science. Amateur mathematicians seeking new brain teasers, instructors desiring to teach advanced problem-solving classes and students from high school juniors to college seniors will find inspiration and an intellectual delight in this text.

TABLE OF CONTENTS
1. Let's Count; 2. What is a proof?; 3. Combinatorial Models; 4. Combinatorial Arguments; 5. Combinatorial Number Theory; 6. What? Is this graph theory? 7. Hints and solutions; Index

Edited by Patrick Delorme, Institut de Mathematiques de Luminy - UPR9016 CNRS, Marseille Cedex 9, France , Michele Vergne, Ecole Polytechnique, Palaiseau Cedex, France

Noncommutative Harmonic Analysis
In Honor of Jacques Carmona

Series: Progress in Mathematics
384 pages , 6 1/8 x 9 , hardcover
ISBN: 3-7643-3207-7, published 2003
expected release date: 06/30/2003

ABOUT THIS BOOK

This volume is devoted to the theme of Noncommutative Harmonic Analysis and consists of articles in honor of Jacques Carmona, whose scientific interests range through all aspects of Lie group representations. Thus, the topics encompass the theory of representations of reductive Lie groups, and especially the determination of the unitary dual, the problem of geometric realizations of representations, harmonic analysis on reductive symmetric spaces, the study of automorphic forms, and results in harmonic analysis that apply to the Langlands program.

General Lie groups is also discussed, particularly from the orbit method perspective, which has been a constant source of inspiration for both the theory of reductive Lie groups and for general Lie groups. Also covered is Kontsevich quantization, which has appeared in the recent years as a powerful tool.
Contributors to this volume include: Baldoni, Barbasch, Barchini, Bieliavsky, Bouaziz, Delorme, Van Den Ban, Harinck, Hersant, Khalgui, Knapp, Kostant, Libine, Mantini, Pevzner, Rossmann, Rubenthaler, Schmid, Torasso, Vergne.

TABLE OF CONTENTS

Baldoni/Vergne: Morris identities for a system of type An * Barbasch: A reduction theorem for the unitary spectrum of U(p,q) * Barchini: Zeta distributions and Boundary values of poisson Transforms * Bouaziz: Quelques remarques sur les distributions invariantes dans les algebres de Lie reductives * Delorme * Van Den Ban * Pascale Harinck: Transfert d'orbitales integrales * Hersant: Sur certains espaces d'homologie relative d'algebres de Lie- Le cas des polarisations positives * Khalgui/Torasso: Formule de Plancherel pour les groupes algebriques * Knapp: Some tiny unitary representations of indefinite orthogonal groups * Kostant: A Branching law for subgroups fixed by an involution and a non compact analogue of the Borel-Weil theorem * Libine: A Localization Argument for Characters of Reductive Lie Groups: An Introduction and Examples * Mantini * Bieliavsky/Pevzner: Symmetric Spaces and star representations. The Poincare disk * Rossmann: McKay correspondence and characters of finite subgroups of SU(2) * Rubenthaler * Schmid

Yoshikazu Giga, Hokkaido University, Sapporo, Japan
Mi-Ho Giga, Hokkaido University, Sapporo, Japan

Nonlinear Partial Differential Equations
Asymptotic Behavior of Solutions and Self-Similar Solutions

350 pages , 6 1/8 x 9 , 20 illus., hardcover
ISBN: 3-7643-4173-4, published 2004
expected release date: 04/02/2004

ABOUT THIS BOOK

This work will serve as an excellent first course in modern analysis. Key topics in nonlinear pde's as well as several fundamental tools and methods are presented; few prerequisites are required of the reader. Challenging exercises, examples, and illustrations help explain the rigorous analytic basis for the Navier--Stokes equations, mean curvature flow equations, and other important equations describing real phenomena.

The main focus of the text is on showing how self-similar solutions are useful in studying the behavior of solutions of nonlinear partial differential equations, especially those of parabolic type. The exposition moves systematically from the basic to more sophisticated concepts, and in the final chapters recent developments and several open problems are presented. An extensive index is provided.

Written for graduate students and researachers by one of Japan's leading analysts, this will be an excellent resource for self-study or classroom use.

TABLE OF CONTENTS

Introduction * Part I: Asymptotic Behavior of Solutions of Partial Differential Equations * Behavior Near Time Infinity of Solution of the Heat Equation * Behavior Near Time Infinity of Solutions of the Vorticity Equation * Self-Similar Solutions of Various Equations * Part II: Useful Analytic Tools * Various Properties of Solutions of the Heat Equation * Compactness Theorems * Calculus Inequalities * Convergence Theorems in the Theory of Integrations * Solutions to Exercises * Bibliography * Index