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Author : Philippe Grillot
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (494 download)
Download or read book Singularites isolees dans des equations et des systemes elliptiques semi-lineaires written by Philippe Grillot and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Philippe Grillot
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (49 download)
Download or read book Singularités isolées dans des équations et des systèmes elliptiques semi-linéaires written by Philippe Grillot and published by . This book was released on 1997 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dans cette thèse, nous nous intéressons d'abord aux comportements asymptotiques au voisinage d'un point des solutions positives d'une équation de type Emden-Fowler avec un terme non-linéaire non-lipschitzien et en dimension supérieure ou égale à 2. Dans une deuxième partie, nous perturbons l'équation en ajoutant un potentiel qui n'assure plus la sous-harmonicité des solutions. La troisième partie est la plus importante de notre travail ; on y étudie les comportements au voisinage de l'origine d'un couple de solutions positives d'un système de type hamiltonien fortement couplé. Le principal résultat dans cette étude est l'obtention d'estimation à priori des solutions basées sur une méthode de Bootstrapp. Nous donnons également des résultats de convergences dans des cas précis et nous mettons en évidence des comportements anisotropes des solutions.
Author : THIERRY.. RAOUX
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (49 download)
Download or read book SINGULARITES ET COMPORTEMENT ASYMPTOTIQUE POUR DES EQUATIONS ET DES SYSTEMES ELLIPTIQUES SEMI-LINEAIRES written by THIERRY.. RAOUX and published by . This book was released on 1995 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: ON ETUDIE LE COMPORTEMENT, AU VOISINAGE D'UNE SINGULARITE ISOLEE, DES SOLUTIONS POSITIVES D'UN SYSTEME D'EQUATIONS AUX DERIVEES PARTIELLES ELLIPTIQUE SEMI-LINEAIRE. ON EN DONNE UNE CLASSIFICATION COMPLETE, FONDEE SUR LA POSITION D'UN CERTAIN EXPOSANT RELATIVEMENT A UNE VALEUR CRITIQUE, DEJA RENCONTREE DANS LE CAS BIEN CONNU D'UNE SEULE EQUATION. ON MET EN EVIDENCE DEUX GRANDES CATEGORIES DE SOLUTIONS: DES SOLUTIONS SYMETRIQUES, DONT LES DEUX TERMES PRESENTENT L'UN DES COMPORTEMENTS CONNUS POUR LES SOLUTIONS D'UNE SEULE EQUATION, ET DES SOLUTIONS DISSYMETRIQUES, DONT LES DEUX TERMES SONT EQUIVALENTS A DES PUISSANCES D'EXPOSANTS DIFFERENTS DE LA DISTANCE A LA SINGULARITE (OU DE SON LOGARITHME). LES DEMONSTRATIONS REPOSENT SUR DES ESTIMATIONS A PRIORI, PERMETTANT DE SE RAMENER A DES SYSTEMES ELLIPTIQUES DANS DES CYLINDRES INFINIS, AINSI QUE SUR DES TECHNIQUES DE REGULARITE EN CHAINE. POUR MIEUX CERNER LES SOLUTIONS DISSYMETRIQUES, ON COMPLETE EGALEMENT L'ETUDE DES SOLUTIONS D'UNE SEULE EQUATION, PAR LE CAS, NON TRAITE JUSQU'ALORS, OU LA NON-LINEARITE EST DE TYPE SOUS-LINEAIRE. DANS CETTE PARTIE, ON OBTIENT AUSSI LES COMPORTEMENTS DES SOLUTIONS RADIALES SANS CONDITION DE SIGNE. ENFIN, DES SOLUTIONS PRESENTANT LES DIFFERENTS TYPES DE COMPORTEMENTS SONT CONSTRUITES, TANT POUR LE SYSTEME QUE POUR L'EQUATION, PAR DES METHODES DE TIR, DE SURSOLUTIONS, DE POINT FIXE ET DE PLAN DE PHASE
Author : Luca Rossi
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (494 download)
Download or read book Generalized Principal Eigenvalue in Unbounded Domains and Its Applications to Nonlinear Elliptic and Parabolic Problems written by Luca Rossi and published by . This book was released on 2006 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse traite différents sujets de la théorie des équations aux dérivées partielles elliptiques et paraboliques. La partie centrale est dédiée à l'étude de la validité de théorèmes de type Liouville pour opérateurs elliptiques linéaires, semi linéaires et complètement non linéaires. Avec "théorèmes de type Liouville" on entend l'unicité (multiplication par une constante près dans le cas des équations linéaires) des solutions bornées (parfois positives) d'une équation elliptique dans un domaine non borné, en analogie avec le théorème classique pour fonctions harmoniques. Nous avons montré que le théorème de type Liouville est valable pour les opérateurs linéaires à coefficients périodiques dans tout l'espace et il n'est plus valable en générale si les coefficients sont seulement presque périodiques.Pour démontrer des théorèmes de Liouville pour des équations semi linéaires on a du introduire des notions qui généralisent celle de la valeur propre principale. Les définitions et l'étude des propriétés de ces valeurs propres principales généralisées font l'objet de la première partie de la thèse, qui est la plus abstraite. La partie regardante les équations elliptiques est conclue par des résultats d'unicité de solutions de viscosité non négatives pour une classe d'équations complètement non linéaires. Le dernier sujet traité dans la thèse est celui des équations de réaction diffusion et, en particulier, de l'étude du comportement des solutions à long terme. L'un des résultats présentés regarde des équations avec vitesse forcée, qui interviennent dans plusieurs modèles de mathématiques appliquées, notamment en écologie.
Author :
Publisher :
ISBN 13 :
Total Pages : 1236 pages
Book Rating : 4.3/5 (91 download)
Download or read book Mathematical Reviews written by and published by . This book was released on 1998 with total page 1236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : YOMNA.. REBAI
Publisher :
ISBN 13 :
Total Pages : 120 pages
Book Rating : 4.:/5 (49 download)
Download or read book CONSTRUCTION DE SOLUTIONS SINGULIERES POUR CERTAINES EQUATIONS AUX DERIVEES PARTIELLES ELLIPTIQUES SEMI-LINEAIRES written by YOMNA.. REBAI and published by . This book was released on 1997 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES TRAVAUX PRESENTES DANS CETTE THESE PORTENT SUR LA CONSTRUCTION DE SOLUTIONS AYANT UN LIEU SINGULIER PRESCRIT POUR CERTAINES EQUATIONS AUX DERIVEES PARTIELLES ELLIPTIQUES SEMI-LINEAIRES. LA METHODE QU'ON UTILISE CONSISTE A DEFINIR UNE FAMILLE DE SOLUTIONS APPROCHEES AU PROBLEME A PARTIR DE SOLUTIONS PARTICULIERES RADIALES, PUIS A ETUDIER LE LINEARISE DE L'OPERATEUR CONSIDERE EN CES SOLUTIONS APPROCHEES DANS DES ESPACES FONCTIONNELS BIEN CHOISIS EN L'OCCURENCE LES ESPACES DE HOLDER A POIDS. ENFIN, LA CONCLUSION EST OBTENUE EN UTILISANT LE THEOREME DES FONCTIONS IMPLICITES OU LE THEOREME DU POINT FIXE. DANS LE PREMIER ARTICLE, ON CONSTRUIT UNE SOLUTION DU PROBLEME AVEC NON-LINEARITE SOUS-CRITIQUE DE LIEU SINGULIER EGAL A UNE SOUS-VARIETE COMPACTE SANS BORD. DANS LE DEUXIEME ARTICLE, ON S'INTERESSE AU CAS SUR-CRITIQUE ET ON MONTRE L'EXISTENCE DE SOLUTION FAIBLE POSITIVE DU PROBLEME CONSIDERE DANS LA BOULE UNITE, AYANT UNE SINGULARITE NON ELIMINABLE EN UN POINT FIXE PROCHE DE L'ORIGINE. ON DONNE EN PARTICULIER UNE DEMONSTRATION A UN RESULTAT CONCERNANT L'EQUATION D'EMDEN ENONCE PAR H. MATANO. DANS LE TROISIEME ARTICLE, ON GENERALISE LE RESULTAT PRECEDENT AU CAS D'UN NOMBRE FINI DE SINGULARITES ISOLEES, PLUS PRECISEMENT, ON MONTRE L'EXISTENCE D'UN OUVERT REGULIER CONNEXE CONTENANT UN NOMBRE FINI DE POINTS FIXES ET L'EXISTENCE D'UNE SOLUTION FAIBLE POSITIVE DU PROBLEME QUI EST SINGULIERE EN CHACUN DE CES POINTS. LE QUATRIEME ARTICLE DE LA THESE EST CONSACRE A L'ETUDE DU PROBLEME DE YAMABE SINGULIER. ON Y MONTRE UN RESULTAT DE NON EXISTENCE DE SOLUTION DU PROBLEME DEFINI SUR UN OUVERT ETOILE PAR RAPPORT A UN POINT QUI A UNE SINGULARITE NON EMILINABLE EN CE POINT. ON Y ETEND AUSSI LES RESULTATS DE R. MAZZEO ET F. PACARD AU CAS DU PROBLEME DE YAMABE DEFINI SUR UN OUVERT BORNE CONTENANT DEUX POINTS FIXES. ON DONNE UNE CONDITION SUFFISANTE PORTANT SUR CES DEUX POINTS POUR QU'IL EXISTE UNE SOLUTION FAIBLE POSITIVE DU PROBLEME QUI EST SINGULIERE EN CHACUN DE CES POINTS.
Author : V. Babelon
Publisher : Springer Science & Business Media
ISBN 13 : 1461203155
Total Pages : 368 pages
Book Rating : 4.4/5 (612 download)
Download or read book Integrable Systems written by V. Babelon and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the proceedings of the International Conference on Integrable Systems in memory of J.-L. Verdier. It was held on July 1-5, 1991 at the Centre International de Recherches Mathematiques (C.I.R.M.) at Luminy, near Marseille (France). This collection of articles, covering many aspects of the theory of integrable Hamiltonian systems, both finite and infinite-dimensional, with an emphasis on the algebro-geometric meth ods, is published here as a tribute to Verdier who had planned this confer ence before his death in 1989 and whose active involvement with this topic brought integrable systems to the fore as a subject for active research in France. The death of Verdier and his wife on August 25, 1989, in a car accident near their country house, was a shock to all of us who were acquainted with them, and was very deeply felt in the mathematics community. We knew of no better way to honor Verdier's memory than to proceed with both the School on Integrable Systems at the C.I.M.P.A. (Centre International de Mathematiques Pures et Appliquees in Nice), and the Conference on the same theme that was to follow it, as he himself had planned them.
Author : Satyanad Kichenassamy
Publisher : Springer Science & Business Media
ISBN 13 : 0817643524
Total Pages : 296 pages
Book Rating : 4.8/5 (176 download)
Download or read book Fuchsian Reduction written by Satyanad Kichenassamy and published by Springer Science & Business Media. This book was released on 2007-09-18 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This four-part text beautifully interweaves theory and applications in Fuchsian Reduction. Background results in weighted Sobolev and Holder spaces as well as Nash-Moser implicit function theorem are provided. Most chapters contain a problem section and notes with references to the literature. This volume can be used as a text in graduate courses in PDEs and/or Algebra, or as a resource for researchers working with applications to Fuchsian Reduction. The comprehensive approach features the inclusion of problems and bibliographic notes.
Author : Satyanad Kichenassamy
Publisher : CRC Press
ISBN 13 : 9780824793289
Total Pages : 304 pages
Book Rating : 4.7/5 (932 download)
Download or read book Nonlinear Wave Equations written by Satyanad Kichenassamy and published by CRC Press. This book was released on 1995-09-05 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work examines the mathematical aspects of nonlinear wave propagation, emphasizing nonlinear hyperbolic problems. It introduces the tools that are most effective for exploring the problems of local and global existence, singularity formation, and large-time behaviour of solutions, and for the study of perturbation methods.
Author : Stuart S. Antman
Publisher : Springer Science & Business Media
ISBN 13 : 1461387043
Total Pages : 379 pages
Book Rating : 4.4/5 (613 download)
Download or read book Metastability and Incompletely Posed Problems written by Stuart S. Antman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This IMA Volume in Mathematics and its Applications Metastability and Incompletely Posed Problems represents the proceedings of a workshop which was an integral part of the 19R4-R5 IMA program on CONTINUUM PHYSICS AND PARTIAL DIFFERENTIAL EOIIATIONS. We are grateful to the Scientific Committee: ,I.L. Eri cksen D. Kinderlehrer H. Rrezis C. Dafermos for their dedication and hard work in developing an imaginative, stimulating, and productive year-long program. George R. Sell Hans Weinberger Preface Most equilibrium events in nature do not realize configurations of minimum energy. They are only metastable. Available knowledge of constitutive relations and environmental interactions may be limiterl. As a result, many configurations may he compatible with the rlata. Such questions are incompletely poserl. The papers in this volume address a wide variety of these issues as they are perceived by the material scientist and the mathematician. They represent a portion of the significant activity which has been underway in recent years, from the experimental arena and physical theory to the analysis of differential equations and computation.
Author : Claude Cohen-Tannoudji
Publisher : John Wiley & Sons
ISBN 13 : 3527345558
Total Pages : 790 pages
Book Rating : 4.5/5 (273 download)
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.
Author : Michel Chipot
Publisher : Elsevier
ISBN 13 : 0080461077
Total Pages : 625 pages
Book Rating : 4.0/5 (84 download)
Download or read book Handbook of Differential Equations:Stationary Partial Differential Equations written by Michel Chipot and published by Elsevier. This book was released on 2005-08-19 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of self contained, state-of-the-art surveys. The authors have made an effort to achieve readability for mathematicians and scientists from other fields, for this series of handbooks to be a new reference for research, learning and teaching. Partial differential equations represent one of the most rapidly developing topics in mathematics. This is due to their numerous applications in science and engineering on the one hand and to the challenge and beauty of associated mathematical problems on the other. Key features: - Self-contained volume in series covering one of the most rapid developing topics in mathematics.- 7 Chapters, enriched with numerous figures originating from numerical simulations.- Written by well known experts in the field. - Self-contained volume in series covering one of the most rapid developing topics in mathematics.- 7 Chapters, enriched with numerous figures originating from numerical simulations.- Written by well known experts in the field.
Author : François Labourie
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (318 download)
Download or read book Lectures on Representations of Surface Groups written by François Labourie and published by . This book was released on 2013 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of these notes is the character variety of representations of a surface group in a Lie group. The author emphasizes the various points of view (combinatorial, differential, and algebraic) and is interested in the description of its smooth points, symplectic structure, volume and connected components. He also shows how a three manifold bounded by the surface leaves a trace in this character variety. These notes were originally designed for students with only elementary knowledge of differential geometry and topology. In the first chapters, the author does not focus on the details of the differential geometric constructions and refers to classical textbooks, while in the more advanced chapters proofs occasionally are provided only for special cases where they convey the flavor of the general arguments. These notes might also be used by researchers entering this fast expanding field as motivation for further studies. The concluding paragraph of every chapter provides suggestions for further research.
Author : Pierre Grisvard
Publisher : Springer
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (318 download)
Download or read book Singularities in Boundary Value Problems written by Pierre Grisvard and published by Springer. This book was released on 1992 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Catherine Bandle
Publisher : Springer Science & Business Media
ISBN 13 : 3764373849
Total Pages : 466 pages
Book Rating : 4.7/5 (643 download)
Download or read book Elliptic and Parabolic Problems written by Catherine Bandle and published by Springer Science & Business Media. This book was released on 2006-01-17 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Haim Brezis has made significant contributions in the fields of partial differential equations and functional analysis, and this volume collects contributions by his former students and collaborators in honor of his 60th anniversary at a conference in Gaeta. It presents new developments in the theory of partial differential equations with emphasis on elliptic and parabolic problems.
Author : P. P. Divakaran
Publisher : Springer
ISBN 13 : 9811317747
Total Pages : 441 pages
Book Rating : 4.8/5 (113 download)
Download or read book The Mathematics of India written by P. P. Divakaran and published by Springer. This book was released on 2018-09-19 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book identifies three of the exceptionally fruitful periods of the millennia-long history of the mathematical tradition of India: the very beginning of that tradition in the construction of the now-universal system of decimal numeration and of a framework for planar geometry; a classical period inaugurated by Aryabhata’s invention of trigonometry and his enunciation of the principles of discrete calculus as applied to trigonometric functions; and a final phase that produced, in the work of Madhava, a rigorous infinitesimal calculus of such functions. The main highlight of this book is a detailed examination of these critical phases and their interconnectedness, primarily in mathematical terms but also in relation to their intellectual, cultural and historical contexts. Recent decades have seen a renewal of interest in this history, as manifested in the publication of an increasing number of critical editions and translations of texts, as well as in an informed analytic interpretation of their content by the scholarly community. The result has been the emergence of a more accurate and balanced view of the subject, and the book has attempted to take an account of these nascent insights. As part of an endeavour to promote the new awareness, a special attention has been given to the presentation of proofs of all significant propositions in modern terminology and notation, either directly transcribed from the original texts or by collecting together material from several texts.
Author : Venketeswara Pai
Publisher : Springer
ISBN 13 : 9811068143
Total Pages : 486 pages
Book Rating : 4.8/5 (11 download)
Download or read book Karaṇapaddhati of Putumana Somayājī written by Venketeswara Pai and published by Springer. This book was released on 2018-03-14 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an important text of the Kerala school of astronomy and mathematics, probably composed in the 16th century. In the Indian astronomical tradition, the karaṇa texts are essentially computational manuals, and they often display a high level of ingenuity in coming up with simplified algorithms for computing planetary longitudes and other related quantities. Karaṇapaddhati, however, is not a karaṇa text. Rather, it discusses the paddhati or the rationale for arriving at suitable algorithms that are needed while preparing a karaṇa text for a given epoch. Thus the work is addressed not to the almanac maker but to the manual maker. Karaṇapaddhati presents the theoretical basis for the vākya system, where the true longitudes of the planet are calculated directly by making use of certain auxiliary notions such as the khaṇḍa, maṇḍala and dhruva along with tabulated values of changes in the true longitude over certain regular intervals which are expressed in the form of vākyas or mnemonic phrases. The text also discusses the method of vallyupasaṃhāra, which is essentially a technique of continued fraction expansion for obtaining optimal approximations to the rates of motion of planets and their anomalies, involving ratios of smaller numbers. It also presents a new fast convergent series for π which is not mentioned in the earlier works of the Kerala school. As this is a unique text presenting the rationale behind the vākya system and the computational procedures used in the karaṇa texts, it would serve as a useful companion for all those interested in the history of astronomy. The authors have provided a translation of the text followed by detailed notes which explain all the computational procedures, along with their rationale, by means of diagrams and equations.
