The Curve Shortening Problem

The Curve Shortening Problem PDF Author: Kai-Seng Chou
Publisher: CRC Press
ISBN: 1420035703
Category : Mathematics
Languages : en
Pages : 266

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Book Description
Although research in curve shortening flow has been very active for nearly 20 years, the results of those efforts have remained scattered throughout the literature. For the first time, The Curve Shortening Problem collects and illuminates those results in a comprehensive, rigorous, and self-contained account of the fundamental results. The a

The Curve Shortening Problem

The Curve Shortening Problem PDF Author: Kai-Seng Chou
Publisher: CRC Press
ISBN: 1420035703
Category : Mathematics
Languages : en
Pages : 266

Get Book Here

Book Description
Although research in curve shortening flow has been very active for nearly 20 years, the results of those efforts have remained scattered throughout the literature. For the first time, The Curve Shortening Problem collects and illuminates those results in a comprehensive, rigorous, and self-contained account of the fundamental results. The a

Nonlinear Diffusion Equations and Their Equilibrium States, 3

Nonlinear Diffusion Equations and Their Equilibrium States, 3 PDF Author: N.G Lloyd
Publisher: Springer Science & Business Media
ISBN: 1461203937
Category : Mathematics
Languages : en
Pages : 567

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Book Description
Nonlinear diffusion equations have held a prominent place in the theory of partial differential equations, both for the challenging and deep math ematical questions posed by such equations and the important role they play in many areas of science and technology. Examples of current inter est are biological and chemical pattern formation, semiconductor design, environmental problems such as solute transport in groundwater flow, phase transitions and combustion theory. Central to the theory is the equation Ut = ~cp(U) + f(u). Here ~ denotes the n-dimensional Laplacian, cp and f are given functions and the solution is defined on some domain n x [0, T] in space-time. FUn damental questions concern the existence, uniqueness and regularity of so lutions, the existence of interfaces or free boundaries, the question as to whether or not the solution can be continued for all time, the asymptotic behavior, both in time and space, and the development of singularities, for instance when the solution ceases to exist after finite time, either through extinction or through blow up.

The Curve Shortening Problem

The Curve Shortening Problem PDF Author: Kai-Seng Chou
Publisher: Chapman and Hall/CRC
ISBN: 9781584882138
Category : Mathematics
Languages : en
Pages : 272

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Book Description
Although research in curve shortening flow has been very active for nearly 20 years, the results of those efforts have remained scattered throughout the literature. For the first time, The Curve Shortening Problem collects and illuminates those results in a comprehensive, rigorous, and self-contained account of the fundamental results. The authors present a complete treatment of the Gage-Hamilton theorem, a clear, detailed exposition of Grayson's convexity theorem, a systematic discussion of invariant solutions, applications to the existence of simple closed geodesics on a surface, and a new, almost convexity theorem for the generalized curve shortening problem. Many questions regarding curve shortening remain outstanding. With its careful exposition and complete guide to the literature, The Curve Shortening Problem provides not only an outstanding starting point for graduate students and new investigations, but a superb reference that presents intriguing new results for those already active in the field.

Lectures on Mean Curvature Flows

Lectures on Mean Curvature Flows PDF Author: Xi-Ping Zhu
Publisher: American Mathematical Soc.
ISBN: 0821833111
Category : Mathematics
Languages : en
Pages : 162

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Book Description
``Mean curvature flow'' is a term that is used to describe the evolution of a hypersurface whose normal velocity is given by the mean curvature. In the simplest case of a convex closed curve on the plane, the properties of the mean curvature flow are described by Gage-Hamilton's theorem. This theorem states that under the mean curvature flow, the curve collapses to a point, and if the flow is diluted so that the enclosed area equals $\pi$, the curve tends to the unit circle. In thisbook, the author gives a comprehensive account of fundamental results on singularities and the asymptotic behavior of mean curvature flows in higher dimensions. Among other topics, he considers in detail Huisken's theorem (a generalization of Gage-Hamilton's theorem to higher dimension), evolutionof non-convex curves and hypersurfaces, and the classification of singularities of the mean curvature flow. Because of the importance of the mean curvature flow and its numerous applications in differential geometry and partial differential equations, as well as in engineering, chemistry, and biology, this book can be useful to graduate students and researchers working in these areas. The book would also make a nice supplementary text for an advanced course in differential geometry.Prerequisites include basic differential geometry, partial differential equations, and related applications.

Ahead of the Curve

Ahead of the Curve PDF Author: Jenny Rushmore
Publisher: Hardie Grant Publishing
ISBN: 1787138720
Category : Crafts & Hobbies
Languages : en
Pages : 464

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Book Description
Ahead of the Curve is the first sewing book to empower curvy and plus size women to feel body confident by sewing a wardrobe that fits. Don’t change your body to fit your clothes – change your clothes to fit your body! Ahead of the Curve includes 5 basic garment patterns (UK sizes 16–36/US size 12–32/EUR sizes 44–64), which includes a pair of trousers, a t-shirt, a sleeveless top and two dress designs. Jenny takes you through a series of “Fit Clinics” – tutorials and case studies demystifying the fitting process – showing you how to adjust these patterns to master the perfect fit for your body shape. Once you have got to grips with this, you can go on to customize your closet and create an unlimited array of fantastic clothes that celebrate your body. If you’re curvy or plus size, trying to find clothes that fit and reflect your personal style can be incredibly difficult and frustrating. Plus size women feel constantly excluded and like they can’t express their personality through clothes. This book finally changes that.

Equivalence, Invariants and Symmetry

Equivalence, Invariants and Symmetry PDF Author: Peter J. Olver
Publisher: Cambridge University Press
ISBN: 9780521478113
Category : Mathematics
Languages : en
Pages : 546

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Book Description
Drawing on a wide range of mathematical disciplines, including geometry, analysis, applied mathematics and algebra, this book presents an innovative synthesis of methods used to study problems of equivalence and symmetry which arise in a variety of mathematical fields and physical applications. Systematic and constructive methods for solving equivalence problems and calculating symmetries are developed and applied to a wide variety of mathematical systems, including differential equations, variational problems, manifolds, Riemannian metrics, polynomials and differential operators. Particular emphasis is given to the construction and classification of invariants, and to the reductions of complicated objects to simple canonical forms. This book will be a valuable resource for students and researchers in geometry, analysis, algebra, mathematical physics and other related fields.

Hamilton’s Ricci Flow

Hamilton’s Ricci Flow PDF Author: Bennett Chow
Publisher: American Mathematical Society, Science Press
ISBN: 1470473690
Category : Mathematics
Languages : en
Pages : 648

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Book Description
Ricci flow is a powerful analytic method for studying the geometry and topology of manifolds. This book is an introduction to Ricci flow for graduate students and mathematicians interested in working in the subject. To this end, the first chapter is a review of the relevant basics of Riemannian geometry. For the benefit of the student, the text includes a number of exercises of varying difficulty. The book also provides brief introductions to some general methods of geometric analysis and other geometric flows. Comparisons are made between the Ricci flow and the linear heat equation, mean curvature flow, and other geometric evolution equations whenever possible. Several topics of Hamilton's program are covered, such as short time existence, Harnack inequalities, Ricci solitons, Perelman's no local collapsing theorem, singularity analysis, and ancient solutions. A major direction in Ricci flow, via Hamilton's and Perelman's works, is the use of Ricci flow as an approach to solving the Poincaré conjecture and Thurston's geometrization conjecture.

Conformal and Potential Analysis in Hele-Shaw Cells

Conformal and Potential Analysis in Hele-Shaw Cells PDF Author: Björn Gustafsson
Publisher: Springer Science & Business Media
ISBN: 3764377046
Category : Mathematics
Languages : en
Pages : 235

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Book Description
This monograph presents recent and new ideas arising from the study of problems of planar fluid dynamics, and which are interesting from the point of view of geometric function theory and potential theory. the book is concerned with geometric problems for Hele-Shaw flows. Additionally, Hele-Shaw flows on parameter spaces are discussed, and connections with string theory are revealed. Assumes a graduate level understanding of real and complex analysis, and fluid mechanics.

Lecture Notes on Mean Curvature Flow

Lecture Notes on Mean Curvature Flow PDF Author: Carlo Mantegazza
Publisher: Springer Science & Business Media
ISBN: 3034801459
Category : Mathematics
Languages : en
Pages : 175

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Book Description
This book is an introduction to the subject of mean curvature flow of hypersurfaces with special emphasis on the analysis of singularities. This flow occurs in the description of the evolution of numerous physical models where the energy is given by the area of the interfaces. These notes provide a detailed discussion of the classical parametric approach (mainly developed by R. Hamilton and G. Huisken). They are well suited for a course at PhD/PostDoc level and can be useful for any researcher interested in a solid introduction to the technical issues of the field. All the proofs are carefully written, often simplified, and contain several comments. Moreover, the author revisited and organized a large amount of material scattered around in literature in the last 25 years.

The Image of the City

The Image of the City PDF Author: Kevin Lynch
Publisher: MIT Press
ISBN: 9780262620017
Category : Architecture
Languages : en
Pages : 212

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Book Description
The classic work on the evaluation of city form. What does the city's form actually mean to the people who live there? What can the city planner do to make the city's image more vivid and memorable to the city dweller? To answer these questions, Mr. Lynch, supported by studies of Los Angeles, Boston, and Jersey City, formulates a new criterion—imageability—and shows its potential value as a guide for the building and rebuilding of cities. The wide scope of this study leads to an original and vital method for the evaluation of city form. The architect, the planner, and certainly the city dweller will all want to read this book.