Tag: Variational

Free Download Variational Methods in Partially Ordered Spaces by Alfred Göpfert , Hassan Riahi , Christiane Tammer , Constantin Zǎlinescu
English | PDF EPUB (True) | 2023 | 576 Pages | ISBN : 303136533X | 78.1 MB
In mathematical modeling of processes occurring in logistics, management science, operations research, networks, mathematical finance, medicine, and control theory, one often encounters optimization problems involving more than one objective function so that Multiobjective Optimization (or Vector Optimization, initiated by W. Pareto) has received new impetus. The growing interest in vector optimization problems, both from the theoretical point of view and as it concerns applications to real world optimization problems, asks for a general scheme which embraces several existing developments and stimulates new ones.

Free Download Variational Principles of Continuum Mechanics with Engineering Applications: Volume 1: Critical Points Theory by Vadim Komkov
English | PDF | 1986 | 393 Pages | ISBN : 9027721572 | 27.2 MB
Approach your problems from the right end It isn’t that they can’t see the solution. It is and begin with the answers. Then one day, that they can’t see the problem. perhaps you will find the final question. G. K. Chesterton. The Scandal of Father ‘The Hermit Clad in Crane Feathers’ in R. Brown ‘The point of a Pin’. van Gulik’s The Chinese Maze Murders. Growing specialization and diversification have brought a host of monographs and textbooks on increasingly specialized topics. However, the "tree" of knowledge of mathematics and related fields does not grow only by putting forth new branches. It also happens, quite often in fact, that branches which were thought to be completely disparate are suddenly seen to be related. Further, the kind and level of sophistication of mathematics applied in various sciences has changed drastically in recent years: measure theory is used (non trivially) in regional and theoretical economics; algebraic geometry interacts with physics; the Minkowsky lemma, coding theory and the structure of water meet one another in packing and covering theory; quantum fields, crystal defects and mathematical programming profit from homotopy theory; Lie algebras are relevant to filtering; and prediction and electrical engineering can use Stein spaces. And in addition to this there are such new emerging subdisciplines as "experimental mathematics", "CFD", "completely integrable systems", "chaos, synergetics and large-scale order", which are almost impossible to fit into the existing classification schemes. They draw upon widely different sections of mathematics.

Free Download Variational Problems in Riemannian Geometry: Bubbles, Scans and Geometric Flows by Paul Baird, Ali Fardoun, Rachid Regbaoui, Ahmad Soufi
English | PDF | 2004 | 158 Pages | ISBN : 3764324325 | 21.3 MB
This volume has grown from a conference entitled Harmonic Maps, Minimal Sur faces and Geometric Flows which was held at the Universite de Bretagne Occi dentale from July 7th-12th, 2002, in the town of Brest in Brittany, France. We welcomed many distinguished mathematicians from around the world and a dy namic meeting took place, with many fruitful exchanges of ideas. In order to produce a work that would have lasting value to the mathematical community, the organisers decided to invite a small number of participants to write in-depth articles around a common theme. These articles provide a balance between introductory surveys and ones that present the newest results that lie at the frontiers of research. We thank these mathematicians, all experts in their field, for their contributions. Such meetings depend on the support of national organisations and the local community and we would like to thank the following: the Ministere de l’Education Nationale, Ministere des Affaires Etrangeres, Centre National de Recherche Sci en tifique (CNRS), Conseil Regional de Bretagne, Conseil General du Finistere, Com munaute Urbaine de Brest, Universite de Bretagne Occidentale (UBO), Faculte des Sciences de l’UBO, Laboratoire de Mathematiques de l’UBO and the Departement de Mathematiques de l’UBO. Their support was generous and ensured the success of the meeting. We would also like to thank the members of the scientific committee for their advice and for their participation in the conception and composition of this volume: Pierre Berard, Jean-Pierre Bourguignon, Frederic Helein, Seiki Nishikawa and Franz Pedit.

Free Download Variational Problems and Applications by Savin Treanta
English | PDF | 2023 | 224 Pages | ISBN : Savin Treanta | 4.6 MB
The current reprint presents studies of uncertain variational problems. It aims to develop the research in this field by formulating and demonstrating some characterization results of well-posedness and robust efficient solutions in new classes of (multiobjective) variational (control) problems governed by multiple and/or path-independent curvilinear integral cost functionals and robust mixed and/or isoperimetric constraints involving first- and second-order partial differential equations.

Free Download Fixed Point Theory and Variational Principles in Metric Spaces
English | 2023 | ISBN: 1009351451 | 234 Pages | PDF | 2 MB
The book is designed for undergraduates, graduates, and researchers of mathematics studying fixed point theory or nonlinear analysis. It deals with the fixed point theory for not only single-valued maps but also set-valued maps. The text is divided into three parts: fixed point theory for single-valued mappings, continuity and fixed point aspects of set-valued analysis, and variational principles and their equilibrium problems. It comprises a comprehensive study of these topics and includes all important results derived from them. The applications of fixed point principles and variational principles, and their generalizations to differential equations and optimization are covered in the text. An elementary treatment of the theory of equilibrium problems and equilibrium version of Ekeland’s variational principle is also provided. New topics such as equilibrium problems, variational principles, Caristi’s fixed point theorem, and Takahashi’s minimization theorem with their applications are also included.

Free Download Dual Variational Approach to Nonlinear Diffusion Equations
English | 2023 | ISBN: 3031245822 | 212 Pages | PDF EPUB (True) | 18 MB
This monograph explores a dual variational formulation of solutions to nonlinear diffusion equations with general nonlinearities as null minimizers of appropriate energy functionals. The author demonstrates how this method can be utilized as a convenient tool for proving the existence of these solutions when others may fail, such as in cases of evolution equations with nonautonomous operators, with low regular data, or with singular diffusion coefficients. By reducing it to a minimization problem, the original problem is transformed into an optimal control problem with a linear state equation. This procedure simplifies the proof of the existence of minimizers and, in particular, the determination of the first-order conditions of optimality. The dual variational formulation is illustrated in the text with specific diffusion equations that have general nonlinearities provided by potentials having various stronger or weaker properties. These equations can represent mathematical models to various real-world physical processes. Inverse problems and optimal control problems are also considered, as this technique is useful in their treatment as well.