Download or read book Existence de solutions pour des systemes couples non lineaires elliptiques ou d evolution written by Olivier Guibé (enseignant-chercheur en mathématiques).) and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book EXISTENCE DE SOLUTIONS POUR DES SYSTEMES COUPLES NON LINEAIRES ELLIPTIQUES OU D EVOLUTION written by OLIVIER.. GUIBE and published by . This book was released on 1998 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA THESE EST CONSACREE A L'ETUDE DE SYSTEMES D'EQUATIONS AUX DERIVEES PARTIELLES ISSUS D'UN MODELE DE THERMOVISCOELASTICITE. LE PREMIER CHAPITRE CONCERNE UNE VERSION STATIONNAIRE DE CE MODELE. EN UTILISANT LE CADRE DES SOLUTIONS RENORMALISEES DES PROBLEMES ELLIPTIQUES A DONNEES L 1, NOUS DEMONTRONS DEUX THEOREMES D'EXISTENCE DE SOLUTIONS AINSI QUE DES RESULTATS PARTIELS CONCERNANT L'UNICITE. DANS LE DEUXIEME CHAPITRE ET DANS LE BUT D'AFFAIBLIR LES HYPOTHESES SUR LES DONNEES, NOUS TRANSFORMONS DE FACON FORMELLE LE SYSTEME CONSIDERE DANS LE CHAPITRE 1. DANS LE CAS PARTICULIER DE CE NOUVEAU SYSTEME, NOUS ADAPTONS LES NOTIONS DE SOLUTIONS RENORMALISEES ET ENTROPIQUES AFIN DE DEMONTRER UN RESULTAT D'EXISTENCE DE SOLUTIONS. DANS LE TROISIEME CHAPITRE, DEUX RESULTATS D'EXISTENCE DE SOLUTIONS SONT ETABLIS POUR LE SYSTEME INITIAL D'EVOLUTION. ON UTILISE LE CADRE DES SOLUTIONS RENORMALISEES POUR LES PROBLEMES PARABOLIQUES A DONNEES L 1.

Download or read book EXISTENCE ET NON EXISTENCE DE SOLUTIONS POSITIVES POUR DES SYSTEMES ELLIPTIQUES NON LINEAIRES written by JEAN.. VELIN and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS CETTE RECHERCHE, NOUS ENTREPRENONS D'ETENDRE AUX SYSTEMES ELLIPTIQUES NON-LINEAIRES DEPENDANT (1) OU NON (2) D'UNE MEME APPLICATION H DITE POTENTIELLE (CE QUE NOUS NOTERONS PAR S.D.P. POUR (1) ET S.N.D.P. POUR (2)), L'ETUDE DE L'EXISTENCE ET DE LA NON-EXISTENCE DE SOLUTIONS POSITIVES, BORNEES ET NON-TRIVIALES. L'OBTENTION D'UNE IDENTITE DE TYPE POHOZAEV, NOUS PERMET DE MONTRER SOUS CERTAINES CONDITIONS QU'UN PROBLEME ASSOCIE A UN S.D.P. N'EST SATISFAIT QUE POUR LA SOLUTION TRIVIALE. PAR CONTRE, NOUS AFFIRMONS L'EXISTENCE POUR UN TEL PROBLEME EN UTILISANT LE THEOREME DE PASSE-MONTAGNE. LORSQUE NOUS CONSIDERONS UN PROBLEME LIE A UN SYSTEME S.N.D.P., AVEC LA CONSTRUCTION D'UN COUPLE SOUS-SUR SOLUTION RADIAL, NOUS ETABLISSONS L'EXISTENCE. DES RESULTATS RELATIFS A CERTAINS PROBLEMES SPECTRAUX NON-LINEAIRES, NOUS DONNENT POUR UN S.D.P. (PARTICULIER), UNE CONDITION NECESSAIRE ET SUFFISANTE D'EXISTENCE

Download or read book SYSTEMES ELLIPTIQUES NON LINEAIRES CONSERVATIFS DANS DES CYLINDRES INFINIS written by JEAN-RENE.. LICOIS and published by . This book was released on 1994 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: ETUDE LORSQUE T TEND VERS L'INFINI, DU COMPORTEMENT DES SOLUTIONS D'UN PROBLEME D'EVOLUTION ELLIPTIQUE, CONSERVATIF, SUR UNE VARIETE RIEMANNIENNE COMPACTE. PREMIERE PARTIE: PERTURBATION LINEAIRE D'UN OPERATEUR MONOTONE (LAPLACIEN ASSOCIE A UNE NON-LINEARITE ANALOGUE A UNE PUISSANCE). ON MONTRE QUE TOUTE SOLUTION POSITIVE CONVERGE VERS UNE SOLUTION DU PROBLEME STATIONNAIRE ASSOCIE. POUR LES SOLUTIONS DE SIGNE QUELCONQUE, ON DISPOSE, SOUS CERTAINES CONDITIONS, D'UN RESULTAT D'HOMOGENEISATION ASYMPTOTIQUE. DANS TOUS LES CAS, LE SYSTEME DYNAMIQUE ASSOCIE POSSEDE UN ATTRACTEUR MAXIMAL FORME DES SOLUTIONS GLOBALES. DEUXIEME PARTIE: GENERALISATION AUX SOLUTIONS POSITIVES D'UN SYSTEME D'EQUATIONS AUX DERIVEES PARTIELLES ELLIPTIQUES AVEC COUPLAGE NON LINEAIRE. TROISIEME PARTIE: ON CONSIDERE UNE PERTURBATION NON-LINEAIRE (DE TYPE PUISSANCE) D'UN OPERATEUR LINEAIRE. NOS TRAVAUX PORTENT SUR LA RECHERCHE DE CONDITIONS, PORTANT SUR LA NORME INFINIE D'UNE SOLUTION, QUI IMPLIQUENT L'HOMOGENEISATION DES SOLUTIONS POSITIVES. DANS LE CAS DE LA SPHERE S1, ON MONTRE, EN UTILISANT UNE DECOMPOSITION DE FOURIER, L'EXISTENCE DE SOLUTIONS S'HOMOGENEISANT AUTOUR DE N'IMPORTE QUELLE SOLUTION HOMOGENE. ON ETUDIE ENFIN LE PROBLEME MODIFIE, EN REMPLACANT UNE CERTAINE PUISSANCE DE LA SOLUTION, PAR SA MOYENNE

Download or read book Existence et compacit de solutions de certaines quations aux d riv es partielles elliptiques non lin aires written by Frank Pacard and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CETTE THESE APPORTE UNE CONTRIBUTION A L'ETUDE DE CERTAINES EQUATIONS AUX DERIVEES PARTIELLES ELLIPTIQUES NON-LINEAIRES. ELLE EST COMPOSEE DE DEUX PARTIES DISTINCTES. DANS UNE PREMIERE PARTIE, NOUS ETUDIONS LA CONVERGENCE DE SUITES DE SURFACES DONT LA COURBURE MOYENNE EST PRESCRITE. LA DEUXIEME PARTIE CONCERNE L'ETUDE D'EQUATIONS AUX DERIVEES PARTIELLES ELLIPTIQUES NON LINEAIRES SCALAIRES. DANS UN PREMIER TEMPS NOUS OBTENONS DES RESULTATS D'EXISTENCE DE SOLUTIONS DEFINIES SUR DES ANNEAUX, PUIS UN RESULTAT D'EXISTENCE DE SOLUTIONS DONT LES SINGULARITES PONCTUELLES SONT FIXEES ET ENFIN UN RESULTAT RELATIF A LA REGULARITE DE SOLUTIONS FAIBLES DE CERTAINES DE CES EQUATIONS

Download or read book Index of Mathematical Papers written by and published by . This book was released on 1973 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimization Optimal Control and Partial Differential Equations written by Viorel Barbu and published by Springer Science & Business Media. This book was released on 1992 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Variational methods in mechanics and physical models.- Fluid flows in dielectric porous media.- The impact of a jet with two fluids on a porous wall.- Critical point methods in nonlinear eigenvalue problems with discontinuities.- Maximum principles for elliptic systems.- Exponential dichotomy of evolution operators in Banach spaces.- Asymptotic properties of solutions to evolution equations.- On some nonlinear elastic waves biperiodical or almost periodical in mechanics and extensions hyperbolic nonlinear partial differential equations.- The controllability of infinite dimensional and distributed parameter systems.- Singularities in boundary value problems and exact controllability of hyperbolic systems.- Exact controllability of a shallow shell model.- Inverse problem: Identification of a melting front in the 2D case.- Micro-local approach to the control for the plates equation.- Bounded solutions for controlled hyperbolic systems.- Controllability and turbulence.- The H? control problem.- The H? boundary control with state feedback; the hyperbolic case.- Remarks on the theory of robust control.- The dynamic programming method.- Optimality and characteristics of Hamilton-Jacobi-Bellman equations.- Verification theorems of dynamic programming type in optimal control.- Isaacs' equations for value-functions of differential games.- Optimal control for robot manipulators.- Control theory and environmental problems: Slow fast models for management of renewable ressources.- On the Riccati equations of stochastic control.- Optimal control of nonlinear partial differential equations.- A boundary Pontryagin's principle for the optimal control of state-constrained elliptic systems.- Controllability properties for elliptic systems, the fictitious domain method and optimal shape design problems.- Optimal control for elliptic equation and applications.- Inverse problems for variational inequalities.- The variation of the drag with respect to the domain in Navier-Stokes flow, .- Mathematical programming and nonsmooth optimization.- Scalar minimax properties in vectorial optimization.- Least-norm regularization for weak two-level optimization problems.- Continuity of the value function with respect to the set of constraints.- On integral inequalities involving logconcave functions.- Numerical solution of free boundary problems in solids mechanics.- Authors' index

Download or read book Mathematical Analysis of Evolution Information and Complexity written by Wolfgang Arendt and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical Analysis of Evolution, Information, and Complexity deals with the analysis of evolution, information and complexity. The time evolution of systems or processes is a central question in science, this text covers a broad range of problems including diffusion processes, neuronal networks, quantum theory and cosmology. Bringing together a wide collection of research in mathematics, information theory, physics and other scientific and technical areas, this new title offers elementary and thus easily accessible introductions to the various fields of research addressed in the book.

Download or read book Mathematical Reviews written by and published by . This book was released on 1977 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elliptic PDEs Measures and Capacities written by Augusto C. Ponce and published by European Mathematical Society. This book was released on 2016 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial differential equations (PDEs) and geometric measure theory (GMT) are branches of analysis whose connections are usually not emphasized in introductory graduate courses. Yet one cannot dissociate the notions of mass or electric charge, naturally described in terms of measures, from the physical potential they generate. Having such a principle in mind, this book illustrates the beautiful interplay between tools from PDEs and GMT in a simple and elegant way by investigating properties such as existence and regularity of solutions of linear and nonlinear elliptic PDEs. Inspired by a variety of sources, from the pioneer balayage scheme of Poincare to more recent results related to the Thomas-Fermi and Chern-Simons models, the problems covered in this book follow an original presentation, intended to emphasize the main ideas in the proofs. Classical techniques such as regularity theory, maximum principles and the method of sub- and supersolutions are adapted to the setting where merely integrability or density assumptions on the data are available. The distinguished role played by capacities and precise representatives is also explained. Other special features are: the remarkable equivalence between Sobolev capacities and Hausdorff contents in terms of trace inequalities; the strong approximation of measures in terms of capacities or densities, normally absent from GMT books; and the rescue of the strong maximum principle for the Schrodinger operator involving singular potentials. This book invites the reader on a trip through modern techniques in the frontier of elliptic PDEs and GMT and is addressed to graduate students and researchers with a deep interest in analysis. Most of the chapters can be read independently, and only a basic knowledge of measure theory, functional analysis, and Sobolev spaces is required.

Download or read book Physics on Manifolds written by M. Flato and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the Colloquium "Analysis, Manifolds and Physics" organized in honour of Yvonne Choquet-Bruhat by her friends, collaborators and former students, on June 3, 4 and 5, 1992 in Paris. Its title accurately reflects the domains to which Yvonne Choquet-Bruhat has made essential contributions. Since the rise of General Relativity, the geometry of Manifolds has become a non-trivial part of space-time physics. At the same time, Functional Analysis has been of enormous importance in Quantum Mechanics, and Quantum Field Theory. Its role becomes decisive when one considers the global behaviour of solutions of differential systems on manifolds. In this sense, General Relativity is an exceptional theory in which the solutions of a highly non-linear system of partial differential equations define by themselves the very manifold on which they are supposed to exist. This is why a solution of Einstein's equations cannot be physically interpreted before its global behaviour is known, taking into account the entire hypothetical underlying manifold. In her youth, Yvonne Choquet-Bruhat contributed in a spectacular way to this domain stretching between physics and mathematics, when she gave the proof of the existence of solutions to Einstein's equations on differential manifolds of a quite general type. The methods she created have been worked out by the French school of mathematics, principally by Jean Leray. Her first proof of the local existence and uniqueness of solutions of Einstein's equations inspired Jean Leray's theory of general hyperbolic systems.

Download or read book Mathematical Models for Suspension Bridges written by Filippo Gazzola and published by Springer. This book was released on 2015-05-29 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work provides a detailed and up-to-the-minute survey of the various stability problems that can affect suspension bridges. In order to deduce some experimental data and rules on the behavior of suspension bridges, a number of historical events are first described, in the course of which several questions concerning their stability naturally arise. The book then surveys conventional mathematical models for suspension bridges and suggests new nonlinear alternatives, which can potentially supply answers to some stability questions. New explanations are also provided, based on the nonlinear structural behavior of bridges. All the models and responses presented in the book employ the theory of differential equations and dynamical systems in the broader sense, demonstrating that methods from nonlinear analysis can allow us to determine the thresholds of instability.

Download or read book Mathematical Tools for Physicists written by Michael Grinfeld and published by John Wiley & Sons. This book was released on 2015-01-12 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition is significantly updated and expanded. This unique collection of review articles, ranging from fundamental concepts up to latest applications, contains individual contributions written by renowned experts in the relevant fields. Much attention is paid to ensuring fast access to the information, with each carefully reviewed article featuring cross-referencing, references to the most relevant publications in the field, and suggestions for further reading, both introductory as well as more specialized. While the chapters on group theory, integral transforms, Monte Carlo methods, numerical analysis, perturbation theory, and special functions are thoroughly rewritten, completely new content includes sections on commutative algebra, computational algebraic topology, differential geometry, dynamical systems, functional analysis, graph and network theory, PDEs of mathematical physics, probability theory, stochastic differential equations, and variational methods.

Download or read book The Porous Medium Equation written by Juan Luis Vazquez and published by Clarendon Press. This book was released on 2006-10-26 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Heat Equation is one of the three classical linear partial differential equations of second order that form the basis of any elementary introduction to the area of PDEs, and only recently has it come to be fairly well understood. In this monograph, aimed at research students and academics in mathematics and engineering, as well as engineering specialists, Professor Vazquez provides a systematic and comprehensive presentation of the mathematical theory of the nonlinear heat equation usually called the Porous Medium Equation (PME). This equation appears in a number of physical applications, such as to describe processes involving fluid flow, heat transfer or diffusion. Other applications have been proposed in mathematical biology, lubrication, boundary layer theory, and other fields. Each chapter contains a detailed introduction and is supplied with a section of notes, providing comments, historical notes or recommended reading, and exercises for the reader.

Download or read book Tools for PDE written by Michael E. Taylor and published by American Mathematical Soc.. This book was released on 2000 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developing three related tools that are useful in the analysis of partial differential equations (PDEs) arising from the classical study of singular integral operators, this text considers pseudodifferential operators, paradifferential operators, and layer potentials.

Download or read book Quantum Mechanics Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.

Download or read book The Floer Memorial Volume written by Helmut Hofer and published by Birkhäuser. This book was released on 2012-12-06 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Andreas Floer died on May 15, 1991 an untimely and tragic death. His visions and far-reaching contributions have significantly influenced the developments of mathematics. His main interests centered on the fields of dynamical systems, symplectic geometry, Yang-Mills theory and low dimensional topology. Motivated by the global existence problem of periodic solutions for Hamiltonian systems and starting from ideas of Conley, Gromov and Witten, he developed his Floer homology, providing new, powerful methods which can be applied to problems inaccessible only a few years ago. This volume opens with a short biography and three hitherto unpublished papers of Andreas Floer. It then presents a collection of invited contributions, and survey articles as well as research papers on his fields of interest, bearing testimony of the high esteem and appreciation this brilliant mathematician enjoyed among his colleagues. Authors include: A. Floer, V.I. Arnold, M. Atiyah, M. Audin, D.M. Austin, S.M. Bates, P.J. Braam, M. Chaperon, R.L. Cohen, G. Dell' Antonio, S.K. Donaldson, B. D'Onofrio, I. Ekeland, Y. Eliashberg, K.D. Ernst, R. Finthushel, A.B. Givental, H. Hofer, J.D.S. Jones, I. McAllister, D. McDuff, Y.-G. Oh, L. Polterovich, D.A. Salamon, G.B. Segal, R. Stern, C.H. Taubes, C. Viterbo, A. Weinstein, E. Witten, E. Zehnder.