Werner Krabs – författare
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24 produkter
24 produkter
E-bok
PDF, Tyska, 2015308 kr
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E-bok
PDF, Tyska, 2013206 kr
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E-bok
PDF, Tyska, 2013433 kr
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In neuerer Zeit sind so viele Lehrbücher über Approximationstheorie erschienen, daß man nach der Berechtigung eines weiteren Buches fragen mag. Die Motivie rung ergab sich aus der Tatsache, daß sowohl in der Zeitschriftenliteratur über Approximationstheorie als auch in den meisten Lehrbüchern relativ wenig auf die Anwendungen eingegangen wird. Es scheint in der heutigen Zeit eine gewisse Diskrepanz zu bestehen zwischen manchen viel von Mathematikern bearbeiteten Gebieten und den Gebieten, deren mathematische Untersuchung von seiten der Anwendungen aus dringend erwünscht wäre. Die in physikalischen und technischen Fragestellungen auftretenden Approximationsprobleme sind, im Zug der fort schreitenden Entwicklung, so vielseitig und oft andersartig als in der bisher ge wöhnlich betrachteten Theorie und dabei zugleich häufig mathematisch sehr interessant und tiefliegend, so daß sich hier ein außerordentlich reiches Betäti gungsfeld für die mathematische Forschung ergibt. Sehr oft sind wir von Studen ten, Diplomanden, Doktoranden nach Themen aus der Approximationstheorie gefragt worden, die zugleich praktische Bedeutung haben, und da hierüber viel fach nicht genügend bekannt zu sein scheint, versucht dieses Büchlein, die Lücke zwischen Theorie und Anwendungen ein wenig aufzufüllen. Da bei den Anwen dungen von den verschiedenen Approximationsarten die Tschebyscheffsche Approximation, kurz T. A. , die anderen Typen an Bedeutung weit zu übertreffen scheint, befaßt sich das Buch vorwiegend mit der T. A. , und zwar sowohl mit der Theorie als auch mit den Anwendungen. Der Brücke zwischen bei den dienen auch verschiedene Übungsaufgaben am Schluß des Buches.
E-bok
PDF, Tyska, 2013538 kr
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E-bok
PDF, Tyska, 2013449 kr
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Häftad, Tyska, 2005
309 kr
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Mathematisch präzise führt dieses Lehrbuch in die Grundlagen der Spieltheorieund deren dynamische Behandlung ein. Dabei werden zugleich die wichtigen Anwendungsmöglichkeiten dieser Theorie z.B. in den Wirtschaftswissenschaften aufgezeigt und anhand von Beispielen erläutert. Beginnend mit der Arbeit von John von Neumann über die Theorie der Gesellschaftsspiele führt Sie dieses Buch bis zu den modernen Konzepten der dynamischen Behandlung von Spielen.
Häftad, Tyska, 1973
513 kr
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In neuerer Zeit sind so viele Lehrbücher über Approximationstheorie erschienen, daß man nach der Berechtigung eines weiteren Buches fragen mag. Die Motivie rung ergab sich aus der Tatsache, daß sowohl in der Zeitschriftenliteratur über Approximationstheorie als auch in den meisten Lehrbüchern relativ wenig auf die Anwendungen eingegangen wird. Es scheint in der heutigen Zeit eine gewisse Diskrepanz zu bestehen zwischen manchen viel von Mathematikern bearbeiteten Gebieten und den Gebieten, deren mathematische Untersuchung von seiten der Anwendungen aus dringend erwünscht wäre. Die in physikalischen und technischen Fragestellungen auftretenden Approximationsprobleme sind, im Zug der fort schreitenden Entwicklung, so vielseitig und oft andersartig als in der bisher ge wöhnlich betrachteten Theorie und dabei zugleich häufig mathematisch sehr interessant und tiefliegend, so daß sich hier ein außerordentlich reiches Betäti gungsfeld für die mathematische Forschung ergibt. Sehr oft sind wir von Studen ten, Diplomanden, Doktoranden nach Themen aus der Approximationstheorie gefragt worden, die zugleich praktische Bedeutung haben, und da hierüber viel fach nicht genügend bekannt zu sein scheint, versucht dieses Büchlein, die Lücke zwischen Theorie und Anwendungen ein wenig aufzufüllen. Da bei den Anwen dungen von den verschiedenen Approximationsarten die Tschebyscheffsche Approximation, kurz T. A. , die anderen Typen an Bedeutung weit zu übertreffen scheint, befaßt sich das Buch vorwiegend mit der T. A. , und zwar sowohl mit der Theorie als auch mit den Anwendungen. Der Brücke zwischen bei den dienen auch verschiedene Übungsaufgaben am Schluß des Buches.
Häftad, Tyska, 1975
514 kr
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Häftad, Tyska, 1998
290 kr
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Häftad, Tyska, 1983
514 kr
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Del 294 - Lecture Notes in Economics and Mathematical Systems
Recent Advances and Historical Development of Vector Optimization
Proceedings of an International Conference on Vector Optimization Held at the Technical University of Darmstadt, FRG, August 4–7, 1986
Häftad, Engelska, 1987
1 125 kr
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In vector optimization one investigates optimization problems in an abstract setting which have a not necessarily real-valued objective function. This scientific discipline is closely related to multi-objective optimization and multi-criteria decision making. This book contains refereed contributions to the "International Conference on Vector Optimization" held at the Technical University of Darmstadt from August 4-7, 1986. This meeting was an interdisciplinary forum devoted to new results in the theory, to applications as well as to the solution of vector optimization problems which are relevant in practice. Because of the great variety of topics covered by the contributions, the 25 articles of this volume are organized in different sections: Historical retrospect, mathematical theory, goal setting and decision making, engineering applications, and related topics. The papers of the invited State-of-the-Art Tutorials given by Professors J.M. Borwein, H. Eschenauer, W. Stadler and P.L. Yu are also included.
Del 529 - Lecture Notes in Economics and Mathematical Systems
Analysis, Controllability and Optimization of Time-Discrete Systems and Dynamical Games
Häftad, Engelska, 2003
547 kr
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J. P. La Salle has developed in [20] a stability theory for systems of difference equations (see also [8]) which we introduce in the first chapter within the framework of metric spaces. The stability theory for such systems can also be found in [13] in a slightly modified form. We start with autonomous systems in the first section of chapter 1. After theoretical preparations we examine the localization of limit sets with the aid of Lyapunov Functions. Applying these Lyapunov Functions we can develop a stability theory for autonomous systems. If we linearize a non-linear system at a fixed point we are able to develop a stability theory for fixed points which makes use of the Frechet derivative at the fixed point. The next subsection deals with general linear systems for which we intro duce a new concept of stability and asymptotic stability that we adopt from [18]. Applications to various fields illustrate these results. We start with the classical predator-prey-model as being developed and investigated by Volterra which is based on a 2 x 2-system of first order differential equations for the densities of the prey and predator population, respectively. This model has also been investigated in [13] with respect to stability of its equilibrium via a Lyapunov function. Here we consider the discrete version of the model.
Del 149 - Lecture Notes in Control and Information Sciences
Optimal Control of Partial Differential Equations
Proceedings of the IFIP WG 7.2 International Conference Irsee, April 9–12, 1990
Häftad, Engelska, 1991
549 kr
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The purpose of the Conference on Optimal Control of Partial Differential Equations was to bring together leading experts in this field and to exchange ideas and information about recent advances in control theory connected with partial differential equations. The papers collected in these Proceedings are mainly research papers in which new results are presented. Out of a broad spectrum of topics the problem of exact controllability played a central role, and also shape control was given some special attention. Nonlinear problems were mainly treated under the aspect of optimality whereas identification problems and also numerical aspects were considered only treated marginally.
Del 173 - Lecture Notes in Control and Information Sciences
On Moment Theory and Controllability of One-Dimensional Vibrating Systems and Heating Processes
Häftad, Engelska, 1992
549 kr
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The main concern of this book is the application of infinitemoment theory to the problem of controllability of one-di-mensional vibrating systems (like strings and beams) andheating processes. Distributed as well as boundary controlis considered.In the case of vibrating systems trigonometric moment pro-blems are to be investigated which is done on the basis ofan abstract moment theory in Hilbert spaces. Equivalently,alsothe theory of linear operator equations on Hilbert spa-ces ( partly with unbounded operators) is applied to theproblem of controllability and time-minimal controllability.In the case of heating processes exponential moment problemsare to be dealt with which is done on the basis of an ab-stract moment theory in Banach spaces. Time-minimal control-lability is also treated with the aid of the theory of line-aroperator equations on Banach spaces.Some advanced knowledge in functional analyis and on partialdifferential equations is preassumed for a fluent reader ofthe book, but parts of it are also readable with basic ma-thematical knowledge (for instance, the finite-dimensionalpart of the introduction).
Del 378 - Lecture Notes in Economics and Mathematical Systems
Modern Methods of Optimization
Proceedings of the Summer School “Modern Methods of Optimization”, held at the Schloß Thurnau of the University of Bayreuth, Bayreuth, FRG, October 1–6, 1990
Häftad, Engelska, 1992
549 kr
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This volume contains the proceedings of the summer school "Modern Methods of Optimization", held at the Schlof3 Thurnau of the University of Bayreuth, October 1-6, 1990. Like other branches of applied mathematics the area of optimization is undergoing a rapid development since the beginning of the computer age. Optimizaiton methods are of increasing importance for both, science and industry. The aim of the summer school was to present state-of-the-art knowledge by inviting 12 specialists from Op timization (and related fields) to present their areas of activity in the form of survey talks. This volume contains 10 of these presentations in slightly extended form. Most lectures started from an undergraduate level and outlinad the developments up to the latest scientifique achievements. This enabled the audience, consisting of about 45 students and young researchers, to get an excellent overview of the latest trends in Optimization as w~ll as a grasp of the breadth of its potential applications. Equally important to the success of the summer school was the "nonmeasurable" part of the activities inherent in such a summer school. Here the inspiring atmosphere of a place like Thurnau helped to establish numerous contacts between "teachers" and "students". The summer school was organized by the Universitii. t Bayreuth together with the Technische Hochschule Darmstadt and was generously sponsored by the Volkswagen stiftung and the Universitii. tsverein Bayreuth. Their interest in the meeting and their support is hereby gratefully acknowledged.
Inbunden, Engelska, 2007
1 635 kr
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Mathematical models in biology and medicine cannot be based on natural laws as it is the case with physics and chemistry. This is due to the fact that biological and medical processes are concerned with living organisms. Mathematical models, however, can be used as a language by which certain aspects of biological or medical processes can be expressed. In general, several mathematical models can be designed in order to describe a biological or medical process and there is no unique criterion which model gives the best description. This book presents several of these models and shows applications of them to different biological and medical problems. The book shows that operations research expertise is necessary in respect to modeling, analysis and optimization of biosystems.
E-bok
PDF, Engelska, 20072 110 kr
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Mathematical models in biology and medicine cannot be based on natural laws as it is the case with physics and chemistry. This is due to the fact that biological and medical processes are concerned with living organisms. Mathematical models, however, can be used as a language by which certain aspects of biological or medical processes can be expressed. In general, several mathematical models can be designed in order to describe a biological or medical process and there is no unique criterion which model gives the best description. This book presents several of these models and shows applications of them to different biological and medical problems. The book shows that operations research expertise is necessary in respect to modeling, analysis and optimization of biosystems.
Häftad, Engelska, 2010
1 635 kr
Skickas inom 10-15 vardagar
Mathematical models in biology and medicine cannot be based on natural laws as it is the case with physics and chemistry. This is due to the fact that biological and medical processes are concerned with living organisms. Mathematical models, however, can be used as a language by which certain aspects of biological or medical processes can be expressed. In general, several mathematical models can be designed in order to describe a biological or medical process and there is no unique criterion which model gives the best description. This book presents several of these models and shows applications of them to different biological and medical problems. The book shows that operations research expertise is necessary in respect to modeling, analysis and optimization of biosystems.
Inbunden, Engelska, 2010
1 092 kr
Skickas inom 10-15 vardagar
At the end of the nineteenth century Lyapunov and Poincaré developed the so called qualitative theory of differential equations and introduced geometric- topological considerations which have led to the concept of dynamical systems. In its present abstract form this concept goes back to G.D. Birkhoff. This is also the starting point of Chapter 1 of this book in which uncontrolled and controlled time-continuous and time-discrete systems are investigated. Controlled dynamical systems could be considered as dynamical systems in the strong sense, if the controls were incorporated into the state space. We, however, adapt the conventional treatment of controlled systems as in control theory. We are mainly interested in the question of controllability of dynamical systems into equilibrium states. In the non-autonomous time-discrete case we also consider the problem of stabilization. We conclude with chaotic behavior of autonomous time discrete systems and actual real-world applications.
E-bok
PDF, Engelska, 20101 416 kr
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At the end of the nineteenth century Lyapunov and Poincaré developed the so called qualitative theory of differential equations and introduced geometric- topological considerations which have led to the concept of dynamical systems. In its present abstract form this concept goes back to G.D. Birkhoff. This is also the starting point of Chapter 1 of this book in which uncontrolled and controlled time-continuous and time-discrete systems are investigated. Controlled dynamical systems could be considered as dynamical systems in the strong sense, if the controls were incorporated into the state space. We, however, adapt the conventional treatment of controlled systems as in control theory. We are mainly interested in the question of controllability of dynamical systems into equilibrium states. In the non-autonomous time-discrete case we also consider the problem of stabilization. We conclude with chaotic behavior of autonomous time discrete systems and actual real-world applications.
E-bok
PDF, Engelska, 2012687 kr
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J. P. La Salle has developed in [20] a stability theory for systems of difference equations (see also [8]) which we introduce in the first chapter within the framework of metric spaces. The stability theory for such systems can also be found in [13] in a slightly modified form. We start with autonomous systems in the first section of chapter 1. After theoretical preparations we examine the localization of limit sets with the aid of Lyapunov Functions. Applying these Lyapunov Functions we can develop a stability theory for autonomous systems. If we linearize a non-linear system at a fixed point we are able to develop a stability theory for fixed points which makes use of the Frechet derivative at the fixed point. The next subsection deals with general linear systems for which we intro duce a new concept of stability and asymptotic stability that we adopt from [18]. Applications to various fields illustrate these results. We start with the classical predator-prey-model as being developed and investigated by Volterra which is based on a 2 x 2-system of first order differential equations for the densities of the prey and predator population, respectively. This model has also been investigated in [13] with respect to stability of its equilibrium via a Lyapunov function. Here we consider the discrete version of the model.
Häftad, Engelska, 2014
1 092 kr
Skickas inom 10-15 vardagar
At the end of the nineteenth century Lyapunov and Poincaré developed the so called qualitative theory of differential equations and introduced geometric- topological considerations which have led to the concept of dynamical systems. In its present abstract form this concept goes back to G.D. Birkhoff. This is also the starting point of Chapter 1 of this book in which uncontrolled and controlled time-continuous and time-discrete systems are investigated. Controlled dynamical systems could be considered as dynamical systems in the strong sense, if the controls were incorporated into the state space. We, however, adapt the conventional treatment of controlled systems as in control theory. We are mainly interested in the question of controllability of dynamical systems into equilibrium states. In the non-autonomous time-discrete case we also consider the problem of stabilization. We conclude with chaotic behavior of autonomous time discrete systems and actual real-world applications.
E-bok
PDF, Engelska, 20121 408 kr
Läs direkt efter köp
In vector optimization one investigates optimization problems in an abstract setting which have a not necessarily real-valued objective function. This scientific discipline is closely related to multi-objective optimization and multi-criteria decision making. This book contains refereed contributions to the "International Conference on Vector Optimization" held at the Technical University of Darmstadt from August 4-7, 1986. This meeting was an interdisciplinary forum devoted to new results in the theory, to applications as well as to the solution of vector optimization problems which are relevant in practice. Because of the great variety of topics covered by the contributions, the 25 articles of this volume are organized in different sections: Historical retrospect, mathematical theory, goal setting and decision making, engineering applications, and related topics. The papers of the invited State-of-the-Art Tutorials given by Professors J.M. Borwein, H. Eschenauer, W. Stadler and P.L. Yu are also included.
E-bok
PDF, Engelska, 2013708 kr
Läs direkt efter köp
This volume contains the proceedings of the summer school "Modern Methods of Optimization", held at the Schlof3 Thurnau of the University of Bayreuth, October 1-6, 1990. Like other branches of applied mathematics the area of optimization is undergoing a rapid development since the beginning of the computer age. Optimizaiton methods are of increasing importance for both, science and industry. The aim of the summer school was to present state-of-the-art knowledge by inviting 12 specialists from Op timization (and related fields) to present their areas of activity in the form of survey talks. This volume contains 10 of these presentations in slightly extended form. Most lectures started from an undergraduate level and outlinad the developments up to the latest scientifique achievements. This enabled the audience, consisting of about 45 students and young researchers, to get an excellent overview of the latest trends in Optimization as w~ll as a grasp of the breadth of its potential applications. Equally important to the success of the summer school was the "nonmeasurable" part of the activities inherent in such a summer school. Here the inspiring atmosphere of a place like Thurnau helped to establish numerous contacts between "teachers" and "students". The summer school was organized by the Universitii. t Bayreuth together with the Technische Hochschule Darmstadt and was generously sponsored by the Volkswagen stiftung and the Universitii. tsverein Bayreuth. Their interest in the meeting and their support is hereby gratefully acknowledged.