Lineare Funktionalanalysis

Eine anwendungsorientierte Einführung

Author: Hans Wilhelm Alt

Publisher: Springer-Verlag

ISBN:

Category: Mathematics

Page: 449

View: 254

Die lineare Funktionalanalysis ist ein Teilgebiet der Mathematik, das Algebra mit Topologie und Analysis verbindet. Das Buch führt in das Fachgebiet ein, dabei bezieht es sich auf Anwendungen in Mathematik und Physik. Neben den vollständigen Beweisen aller mathematischen Sätze enthält der Band zahlreiche Aufgaben, meist mit Lösungen. Für die Neuauflage wurden die Inhalte komplett überarbeitet. Das Standardwerk auf dem Gebiet der Funktionalanalysis richtet sich insbesondere an Leser mit Interesse an Anwendungen auf Differentialgleichungen.

Lineare Funktionalanalysis

Eine anwendungsorientierte Einführung

Author: Hans W. Alt

Publisher: Springer-Verlag

ISBN:

Category: Mathematics

Page: 418

View: 643

"Die lineare Funktionalanalysis ist ein weitgehend kanonisiertes Teilgebiet der Mathematik, das in seiner Synthese von Algebra, Topologie und Analysis von großem ästhetischem Reiz ist. Das vorliegende Buch gibt eine geschlossene, geschickt aufgebaute und gut geschriebene Einführung in dieses Gebiet, die auch die erforderlichen Kenntnisse aus der Maßtheorie ... Äin eigenen AnhängenÜ bereitstellt." (Internationale Mathematische Nachrichten) Das Buch enthält überdies zahlreiche Aufgaben, die meisten mit Lösungen. Es ist besonders geeignet für Leser, die an Anwendungen der Funktionalanalyis auf Differentialgleichungen interessiert sind. Die vorliegende dritte Auflage ist vollständig überarbeitet, basierend auf den Lehrerfahrungen des Autors in den letzten Jahren.

International Mathematical News

Nouvelles Mathématiques Internationales; Internationale Mathematische Nachrichten

Author:

Publisher:

ISBN:

Category: Education

Page:

View: 483

Issues for Dec. 1952- include section: Nachrichten der Österreichischen Mathematischen Gesellschaft.

Shape Optimization under Uncertainty from a Stochastic Programming Point of View

Author: Harald Held

Publisher: Springer Science & Business Media

ISBN:

Category: Mathematics

Page: 148

View: 279

Optimization problems are relevant in many areas of technical, industrial, and economic applications. At the same time, they pose challenging mathematical research problems in numerical analysis and optimization. Harald Held considers an elastic body subjected to uncertain internal and external forces. Since simply averaging the possible loadings will result in a structure that might not be robust for the individual loadings, he uses techniques from level set based shape optimization and two-stage stochastic programming. Taking advantage of the PDE’s linearity, he is able to compute solutions for an arbitrary number of scenarios without significantly increasing the computational effort. The author applies a gradient method using the shape derivative and the topological gradient to minimize, e.g., the compliance and shows that the obtained solutions strongly depend on the initial guess, in particular its topology. The stochastic programming perspective also allows incorporating risk measures into the model which might be a more appropriate objective in many practical applications.

Optimization of Elliptic Systems

Theory and Applications

Author: Pekka Neittaanmaki

Publisher: Springer Science & Business Media

ISBN:

Category: Mathematics

Page: 512

View: 211

The present monograph is intended to provide a comprehensive and accessible introduction to the optimization of elliptic systems. This area of mathematical research, which has many important applications in science and technology. has experienced an impressive development during the past two decades. There are already many good textbooks dealing with various aspects of optimal design problems. In this regard, we refer to the works of Pironneau [1984], Haslinger and Neittaanmaki [1988], [1996], Sokolowski and Zolksio [1992], Litvinov [2000], Allaire [2001], Mohammadi and Pironneau [2001], Delfour and Zolksio [2001], and Makinen and Haslinger [2003]. Already Lions [I9681 devoted a major part of his classical monograph on the optimal control of partial differential equations to the optimization of elliptic systems. Let us also mention that even the very first known problem of the calculus of variations, the brachistochrone studied by Bernoulli back in 1696. is in fact a shape optimization problem. The natural richness of this mathematical research subject, as well as the extremely large field of possible applications, has created the unusual situation that although many important results and methods have already been est- lished, there are still pressing unsolved questions. In this monograph, we aim to address some of these open problems; as a consequence, there is only a minor overlap with the textbooks already existing in the field.

Convex Functions and their Applications

A Contemporary Approach

Author: Constantin Niculescu

Publisher: Springer Science & Business Media

ISBN:

Category: Mathematics

Page: 256

View: 237

Thorough introduction to an important area of mathematics Contains recent results Includes many exercises

Coulomb Frames in the Normal Bundle of Surfaces in Euclidean Spaces

Topics from Differential Geometry and Geometric Analysis of Surfaces

Author: Steffen Fröhlich

Publisher: Springer

ISBN:

Category: Mathematics

Page: 117

View: 367

This book is intended for advanced students and young researchers interested in the analysis of partial differential equations and differential geometry. It discusses elementary concepts of surface geometry in higher-dimensional Euclidean spaces, in particular the differential equations of Gauss-Weingarten together with various integrability conditions and corresponding surface curvatures. It includes a chapter on curvature estimates for such surfaces, and, using results from potential theory and harmonic analysis, it addresses geometric and analytic methods to establish the existence and regularity of Coulomb frames in their normal bundles, which arise as critical points for a functional of total torsion.

Nonsmooth Variational Problems and Their Inequalities

Comparison Principles and Applications

Author: Siegfried Carl

Publisher: Springer Science & Business Media

ISBN:

Category: Mathematics

Page: 395

View: 904

This monograph focuses primarily on nonsmooth variational problems that arise from boundary value problems with nonsmooth data and/or nonsmooth constraints, such as multivalued elliptic problems, variational inequalities, hemivariational inequalities, and their corresponding evolution problems. It provides a systematic and unified exposition of comparison principles based on a suitably extended sub-supersolution method.

Nonlinear Partial Differential Equations with Applications

Author: Tomáš Roubíček

Publisher: Springer Science & Business Media

ISBN:

Category: Mathematics

Page: 476

View: 456

This book primarily concerns quasilinear and semilinear elliptic and parabolic partial differential equations, inequalities, and systems. The exposition leads the reader through the general theory based on abstract (pseudo-) monotone or accretive operators as fast as possible towards the analysis of concrete differential equations, which have specific applications in continuum (thermo-) mechanics of solids and fluids, electrically (semi-) conductive media, modelling of biological systems, or in mechanical engineering. Selected parts are mainly an introduction into the subject while some others form an advanced textbook. The second edition simplifies and extends the exposition at particular spots and augments the applications especially towards thermally coupled systems, magnetism, and more. The intended audience is graduate and PhD students as well as researchers in the theory of partial differential equations or in mathematical modelling of distributed parameter systems. ------ The monograph contains a wealth of material in both the abstract theory of steady-state or evolution equations of monotone and accretive type and concrete applications to nonlinear partial differential equations from mathematical modeling. The organization of the material is well done, and the presentation, although concise, is clear, elegant and rigorous. (...) this book is a notable addition to the existing literature. Also, it certainly will prove useful to engineers, physicists, biologists and other scientists interested in the analysis of (...) nonlinear differential models of the real world. (Mathematical Reviews)

Optimization with PDE Constraints

Author: Michael Hinze

Publisher: Springer Science & Business Media

ISBN:

Category: Mathematics

Page: 270

View: 304

Solving optimization problems subject to constraints given in terms of partial d- ferential equations (PDEs) with additional constraints on the controls and/or states is one of the most challenging problems in the context of industrial, medical and economical applications, where the transition from model-based numerical si- lations to model-based design and optimal control is crucial. For the treatment of such optimization problems the interaction of optimization techniques and num- ical simulation plays a central role. After proper discretization, the number of op- 3 10 timization variables varies between 10 and 10 . It is only very recently that the enormous advances in computing power have made it possible to attack problems of this size. However, in order to accomplish this task it is crucial to utilize and f- ther explore the speci?c mathematical structure of optimization problems with PDE constraints, and to develop new mathematical approaches concerning mathematical analysis, structure exploiting algorithms, and discretization, with a special focus on prototype applications. The present book provides a modern introduction to the rapidly developing ma- ematical ?eld of optimization with PDE constraints. The ?rst chapter introduces to the analytical background and optimality theory for optimization problems with PDEs. Optimization problems with PDE-constraints are posed in in?nite dim- sional spaces. Therefore, functional analytic techniques, function space theory, as well as existence- and uniqueness results for the underlying PDE are essential to study the existence of optimal solutions and to derive optimality conditions.