Structurally Unstable Quadratic Vector Fields of Codimension One

Structurally Unstable Quadratic Vector Fields of Codimension One PDF Author: Joan C. Artés
Publisher: Springer
ISBN: 3319921177
Category : Mathematics
Languages : en
Pages : 272

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Book Description
Originating from research in the qualitative theory of ordinary differential equations, this book follows the authors’ work on structurally stable planar quadratic polynomial differential systems. In the present work the authors aim at finding all possible phase portraits in the Poincaré disc, modulo limit cycles, of planar quadratic polynomial differential systems manifesting the simplest level of structural instability. They prove that there are at most 211 and at least 204 of them.

Structurally Unstable Quadratic Vector Fields of Codimension One

Structurally Unstable Quadratic Vector Fields of Codimension One PDF Author: Joan C. Artés
Publisher: Springer
ISBN: 3319921177
Category : Mathematics
Languages : en
Pages : 272

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Book Description
Originating from research in the qualitative theory of ordinary differential equations, this book follows the authors’ work on structurally stable planar quadratic polynomial differential systems. In the present work the authors aim at finding all possible phase portraits in the Poincaré disc, modulo limit cycles, of planar quadratic polynomial differential systems manifesting the simplest level of structural instability. They prove that there are at most 211 and at least 204 of them.

Structurally Stable Quadratic Vector Fields

Structurally Stable Quadratic Vector Fields PDF Author: Joan C. Artés
Publisher: American Mathematical Soc.
ISBN: 082180796X
Category : Mathematics
Languages : en
Pages : 122

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Book Description
This book solves a problem that has been open for over 20 years--the complete classification of structurally stable quadratic vector fields modulo limit cycles. The authors give all possible phase portraits for such structurally stable quadratic vector fields. No index. Annotation copyrighted by Book News, Inc., Portland, OR

Geometric Configurations of Singularities of Planar Polynomial Differential Systems

Geometric Configurations of Singularities of Planar Polynomial Differential Systems PDF Author: Joan C. Artés
Publisher: Springer Nature
ISBN: 3030505707
Category : Mathematics
Languages : en
Pages : 699

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Book Description
This book addresses the global study of finite and infinite singularities of planar polynomial differential systems, with special emphasis on quadratic systems. While results covering the degenerate cases of singularities of quadratic systems have been published elsewhere, the proofs for the remaining harder cases were lengthier. This book covers all cases, with half of the content focusing on the last non-degenerate ones. The book contains the complete bifurcation diagram, in the 12-parameter space, of global geometrical configurations of singularities of quadratic systems. The authors’ results provide - for the first time - global information on all singularities of quadratic systems in invariant form and their bifurcations. In addition, a link to a very helpful software package is included. With the help of this software, the study of the algebraic bifurcations becomes much more efficient and less time-consuming. Given its scope, the book will appeal to specialists on polynomial differential systems, pure and applied mathematicians who need to study bifurcation diagrams of families of such systems, Ph.D. students, and postdoctoral fellows.

Dynamics and Bifurcations

Dynamics and Bifurcations PDF Author: Jack K. Hale
Publisher: Springer Science & Business Media
ISBN: 1461244269
Category : Mathematics
Languages : en
Pages : 577

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Book Description
In recent years, due primarily to the proliferation of computers, dynamical systems has again returned to its roots in applications. It is the aim of this book to provide undergraduate and beginning graduate students in mathematics or science and engineering with a modest foundation of knowledge. Equations in dimensions one and two constitute the majority of the text, and in particular it is demonstrated that the basic notion of stability and bifurcations of vector fields are easily explained for scalar autonomous equations. Further, the authors investigate the dynamics of planar autonomous equations where new dynamical behavior, such as periodic and homoclinic orbits appears.

Modeling in Fluid Mechanics

Modeling in Fluid Mechanics PDF Author: Igor Gaissinski
Publisher: CRC Press
ISBN: 1351029053
Category : Mathematics
Languages : en
Pages : 513

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Book Description
This volume is dedicated to modeling in fluid mechanics and is divided into four chapters, which contain a significant number of useful exercises with solutions. The authors provide relatively complete references on relevant topics in the bibliography at the end of each chapter.

Computational Differentiation

Computational Differentiation PDF Author: M. Berz
Publisher: Soc for Industrial & Applied Math
ISBN:
Category : Computers
Languages : en
Pages : 458

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Book Description
This volume encompasses both the automatic transformation of computer programs as well as the methodologies for the efficient exploitation of mathematical underpinnings or program structure.

Bifurcations

Bifurcations PDF Author: Takashi Matsumoto
Publisher: Springer Science & Business Media
ISBN: 4431682430
Category : Mathematics
Languages : en
Pages : 502

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Book Description
Bifurcation originally meant "splitting into two parts. " Namely, a system under goes a bifurcation when there is a qualitative change in the behavior of the sys tem. Bifurcation in the context of dynamical systems, where the time evolution of systems are involved, has been the subject of research for many scientists and engineers for the past hundred years simply because bifurcations are interesting. A very good way of understanding bifurcations would be to see them first and study theories second. Another way would be to first comprehend the basic concepts and theories and then see what they look like. In any event, it is best to both observe experiments and understand the theories of bifurcations. This book attempts to provide a general audience with both avenues toward understanding bifurcations. Specifically, (1) A variety of concrete experimental results obtained from electronic circuits are given in Chapter 1. All the circuits are very simple, which is crucial in any experiment. The circuits, however, should not be too simple, otherwise nothing interesting can happen. Albert Einstein once said "as simple as pos sible, but no more" . One of the major reasons for the circuits discussed being simple is due to their piecewise-linear characteristics. Namely, the voltage current relationships are composed of several line segments which are easy to build. Piecewise-linearity also simplifies rigorous analysis in a drastic man ner. (2) The piecewise-linearity of the circuits has far reaching consequences.

Mathematical Reviews

Mathematical Reviews PDF Author:
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 784

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Book Description


Hidden Dynamics

Hidden Dynamics PDF Author: Mike R. Jeffrey
Publisher: Springer
ISBN: 3030021076
Category : Mathematics
Languages : en
Pages : 531

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Book Description
The dream of mathematical modeling is of systems evolving in a continuous, deterministic, predictable way. Unfortunately continuity is lost whenever the `rules of the game' change, whether a change of behavioural regime, or a change of physical properties. From biological mitosis to seizures. From rattling machine parts to earthquakes. From individual decisions to economic crashes. Where discontinuities occur, determinacy is inevitably lost. Typically the physical laws of such change are poorly understood, and too ill-defined for standard mathematics. Discontinuities offer a way to make the bounds of scientific knowledge a part of the model, to analyse a system with detail and rigour, yet still leave room for uncertainty. This is done without recourse to stochastic modeling, instead retaining determinacy as far as possible, and focussing on the geometry of the many outcomes that become possible when it breaks down. In this book the foundations of `piecewise-smooth dynamics' theory are rejuvenated, given new life through the lens of modern nonlinear dynamics and asymptotics. Numerous examples and exercises lead the reader through from basic to advanced analytical methods, particularly new tools for studying stability and bifurcations. The book is aimed at scientists and engineers from any background with a basic grounding in calculus and linear algebra. It seeks to provide an invaluable resource for modeling discontinuous systems, but also to empower the reader to develop their own novel models and discover as yet unknown phenomena.

Nonconservative Stability Problems of Modern Physics

Nonconservative Stability Problems of Modern Physics PDF Author: Oleg N. Kirillov
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110655403
Category : Science
Languages : en
Pages : 548

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Book Description
This updated revision gives a complete and topical overview on Nonconservative Stability which is essential for many areas of science and technology ranging from particles trapping in optical tweezers and dynamics of subcellular structures to dissipative and radiative instabilities in fluid mechanics, astrophysics and celestial mechanics. The author presents relevant mathematical concepts as well as rigorous stability results and numerous classical and contemporary examples from non-conservative mechanics and non-Hermitian physics. New coverage of ponderomotive magnetism, experimental detection of Ziegler’s destabilization phenomenon and theory of double-diffusive instabilities in magnetohydrodynamics.