Robert S. Strichartz

Differential Equations on Fractals: A Tutorial

Paper | 2006 | ISBN: 0-691-12731-X
Cloth | 2006 | ISBN: 0-691-12542-2
192 pp. | 6 x 9 | 43 line illus.

Differential Equations on Fractals opens the door to understanding the recently developed area of analysis on fractals, focusing on the construction of a Laplacian on the Sierpinski gasket and related fractals. Written in a lively and informal style, with lots of intriguing exercises on all levels of difficulty, the book is accessible to advanced undergraduates, graduate students, and mathematicians who seek an understanding of analysis on fractals. Robert Strichartz takes the reader to the frontiers of research, starting with carefully motivated examples and constructions.

One of the great accomplishments of geometric analysis in the nineteenth and twentieth centuries was the development of the theory of Laplacians on smooth manifolds. But what happens when the underlying space is rough? Fractals provide models of rough spaces that nevertheless have a strong structure, specifically self-similarity. Exploiting this structure, researchers in probability theory in the 1980s were able to prove the existence of Brownian motion, and therefore of a Laplacian, on certain fractals. An explicit analytic construction was provided in 1989 by Jun Kigami. Differential Equations on Fractals explains Kigami's construction, shows why it is natural and important, and unfolds many of the interesting consequences that have recently been discovered.

This book can be used as a self-study guide for students interested in fractal analysis, or as a textbook for a special topics course.

Robert S. Strichartz is Professor of Mathematics at Cornell University. He is the author of The Way of Analysis and A Guide to Distribution Theory and Fourier Transforms.

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Zou, Wenming, Schechter, Martin

Critical Point Theory and Its Applications

2006, XII, 318 p., Hardcover
ISBN: 0-387-32965-X

About this book

Since the birth of the calculus of variations, researchers have discovered that variational methods, when they apply, can obtain better results than most other methods. Moreover, they apply in a very large number of situations. It was realized many years ago that the solutions of a great number of problems are in effect critical points of functionals. Critical Point Theory and Its Applications presents some of the latest research in the area of critical point theory. Researchers have obtained many new results recently using this approach, and in most cases comparable results have not been obtained with other methods. This book describes the methods and presents the newest applications.

The topics covered in the book include extrema, even valued functionals, weak and double linking, sign changing solutions, Morse inequalities, and cohomology groups. The applications described include Hamiltonian systems, Schrodinger equations and systems, jumping nonlinearities, elliptic equations and systems, superlinear problems and beam equations. Many minimax theorems are established without the use of the (PS) compactness condition.

Table of contents

Preface.- 1. Preliminaries.- 2. Functionals Bounded Below.- 3. Even Functionals.- 4. Weak Linking and Homoclinic Orbits.- 5. Double Linking Theorems.- 6. Superlinear Problems.- 7. Systems with Hamiltonian Potentials.- 8. Linking and Elliptic Systems.- 9. Sign-changing Solutions.- 10. Cohomology Groups.- Bibliography.- Index.

A.V.Bolsinov, A.T.Fomenko and A.A.Oshemkov, Moscow State University, Russia

Topological Methods in the Theory of Integrable Systems

300pp Hbk 2006

This volume comprises selected papers on the subject of the topology of integrable systems ---- theory which studies their qualitative properties, singularities and topological invariants. It presents new trends in the theory of integrable systems and also give the reader some background to this field.

In particular, the volume includes original papers devoted to the classification of singularities with symmetries, semi-classical integrability, construction of "exotic" integrable systems, applications of integrability to Riemannian geometry, and analysis of specific integrable systems in classical mechanics. All of the contributing authors are well-known specialists actively working in this area of mathematics.

Braides, Andrea; Chiado Piat, Valeria (Eds.)

Topics on Concentration Phenomena and Problems with Multiple Scales

Series: Lecture Notes of the Unione Matematica Italiana , Vol. 2
2006, XI, 317 p., 5 illus., Softcover
ISBN: 3-540-36241-X

About this book

The study of variational problems showing multi-scale behaviour with oscillation or concentration phenomena are a challenging topic of very active research. This volume collects lecture notes devoted to the asymptotic analysis of such problems when the multi-scale behaviour derives from scale separation in the passage from atomistic systems to continuous functionals, from competition between bulk and surface energies, from various types of homogenization processes (random, in perforated domains, on fractals), and to concentration effects in Ginzburg-Landau energies and in subcritical growth problems.

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Tartar, Luc

An Introduction to Navier-Stokes Equation and Oceanography

Series: Lecture Notes of the Unione Matematica Italiana , Vol. 1
2006, XXVIII, 247 p., Softcover
ISBN: 3-540-35743-2

About this book

The Introduction to Navier-Stokes Equation and Oceanography corresponds to a graduate course in mathematics, taught at Carnegie Mellon University in the spring of 1999. Comments were added to the lecture notes distributed to the students, as well as short biographical information for all scientists mentioned in the text, the purpose being to show that the creation of scientific knowledge is an international enterprise, and who contributed to it, from where, and when. The goal of the course is to teach a critical point of view concerning the partial differential equations of continuum mechanics, and to show the need for developing new adapted mathematical tools.

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Batagelj, V.; Bock, H.-H.; Ferligoj, A.; ?iberna, A. (Eds.)

Data Science and Classification

Series: Studies in Classification, Data Analysis, and Knowledge Organization
2006, XII, 358 p., 67 illus., Softcover
ISBN: 3-540-34415-2

About this book

This volume provides new methodological developments in data analysis and classification. A wide range of topics is covered that includes the measurement of similarity and dissimilarity, methods for classification and clustering, network and graph analyses, analysis of symbolic data, and web mining. Apart from structural and theoretical results the book shows how to apply the proposed to a variety of problems, for example in medicine, microarray analysis, social network structures, and music. The combination of new methodological advances with the wide range of real applications collected in this volume is of special value for researchers when choosing the appropriate among newly developed analytical tools for their research problems in classification and data analysis.

Table of contents

Similarity and Dissimilarity.- Classification and Clustering.- Network and Graph Analysis.- Analysis of Symbolic Data.- General Data Analysis Methods.- Data and Web Mining.- Analysis of Music Data.- Gene and Microarray Analysis.