The existence of surfaces of constant mean curvature with free boundaries

The existence of surfaces of constant mean curvature with free boundaries PDF Author: Michael Struwe
Publisher:
ISBN:
Category :
Languages : de
Pages : 49

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Book Description

The existence of surfaces of constant mean curvature with free boundaries

The existence of surfaces of constant mean curvature with free boundaries PDF Author: Michael Struwe
Publisher:
ISBN:
Category :
Languages : de
Pages : 49

Get Book Here

Book Description


Surfaces with Constant Mean Curvature

Surfaces with Constant Mean Curvature PDF Author: Katsuei Kenmotsu
Publisher: American Mathematical Soc.
ISBN: 9780821834794
Category : Mathematics
Languages : en
Pages : 156

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Book Description
The mean curvature of a surface is an extrinsic parameter measuring how the surface is curved in the three-dimensional space. A surface whose mean curvature is zero at each point is a minimal surface, and it is known that such surfaces are models for soap film. There is a rich and well-known theory of minimal surfaces. A surface whose mean curvature is constant but nonzero is obtained when we try to minimize the area of a closed surface without changing the volume it encloses. An easy example of a surface of constant mean curvature is the sphere. A nontrivial example is provided by the constant curvature torus, whose discovery in 1984 gave a powerful incentive for studying such surfaces. Later, many examples of constant mean curvature surfaces were discovered using various methods of analysis, differential geometry, and differential equations. It is now becoming clear that there is a rich theory of surfaces of constant mean curvature. In this book, the author presents numerous examples of constant mean curvature surfaces and techniques for studying them. Many finely rendered figures illustrate the results and allow the reader to visualize and better understand these beautiful objects. The book is suitable for advanced undergraduates, graduate students and research mathematicians interested in analysis and differential geometry.

Constant Mean Curvature Surfaces with Boundary

Constant Mean Curvature Surfaces with Boundary PDF Author: Rafael López
Publisher: Springer Science & Business Media
ISBN: 3642396267
Category : Mathematics
Languages : en
Pages : 296

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Book Description
The study of surfaces with constant mean curvature (CMC) is one of the main topics in classical differential geometry. Moreover, CMC surfaces are important mathematical models for the physics of interfaces in the absence of gravity, where they separate two different media or for capillary phenomena. Further, as most techniques used in the theory of CMC surfaces not only involve geometric methods but also PDE and complex analysis, the theory is also of great interest for many other mathematical fields. While minimal surfaces and CMC surfaces in general have already been treated in the literature, the present work is the first to present a comprehensive study of “compact surfaces with boundaries,” narrowing its focus to a geometric view. Basic issues include the discussion whether the symmetries of the curve inherit to the surface; the possible values of the mean curvature, area and volume; stability; the circular boundary case and the existence of the Plateau problem in the non-parametric case. The exposition provides an outlook on recent research but also a set of techniques that allows the results to be expanded to other ambient spaces. Throughout the text, numerous illustrations clarify the results and their proofs. The book is intended for graduate students and researchers in the field of differential geometry and especially theory of surfaces, including geometric analysis and geometric PDEs. It guides readers up to the state-of-the-art of the theory and introduces them to interesting open problems.

Surfaces of Constant Mean Curvature in Space Forms

Surfaces of Constant Mean Curvature in Space Forms PDF Author: Bennett Palmer
Publisher:
ISBN:
Category :
Languages : en
Pages : 156

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On the Existence of Surfaces with Prescribed Mean Curvature and Boundary in Higher Dimensions

On the Existence of Surfaces with Prescribed Mean Curvature and Boundary in Higher Dimensions PDF Author: Frank Duzaar
Publisher:
ISBN:
Category :
Languages : en
Pages : 45

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Variational Methods

Variational Methods PDF Author: Michael Struwe
Publisher: Springer Science & Business Media
ISBN: 3662041944
Category : Science
Languages : en
Pages : 292

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Book Description
Hilberts talk at the second International Congress of 1900 in Paris marked the beginning of a new era in the calculus of variations. A development began which, within a few decades, brought tremendous success, highlighted by the 1929 theorem of Ljusternik and Schnirelman on the existence of three distinct prime closed geodesics on any compact surface of genus zero, and the 1930/31 solution of Plateaus problem by Douglas and Rad. This third edition gives a concise introduction to variational methods and presents an overview of areas of current research in the field, plus a survey on new developments.

Regularity of Minimal Surfaces

Regularity of Minimal Surfaces PDF Author: Ulrich Dierkes
Publisher: Springer Science & Business Media
ISBN: 3642117007
Category : Mathematics
Languages : en
Pages : 634

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Book Description
Regularity of Minimal Surfaces begins with a survey of minimal surfaces with free boundaries. Following this, the basic results concerning the boundary behaviour of minimal surfaces and H-surfaces with fixed or free boundaries are studied. In particular, the asymptotic expansions at interior and boundary branch points are derived, leading to general Gauss-Bonnet formulas. Furthermore, gradient estimates and asymptotic expansions for minimal surfaces with only piecewise smooth boundaries are obtained. One of the main features of free boundary value problems for minimal surfaces is that, for principal reasons, it is impossible to derive a priori estimates. Therefore regularity proofs for non-minimizers have to be based on indirect reasoning using monotonicity formulas. This is followed by a long chapter discussing geometric properties of minimal and H-surfaces such as enclosure theorems and isoperimetric inequalities, leading to the discussion of obstacle problems and of Plateau ́s problem for H-surfaces in a Riemannian manifold. A natural generalization of the isoperimetric problem is the so-called thread problem, dealing with minimal surfaces whose boundary consists of a fixed arc of given length. Existence and regularity of solutions are discussed. The final chapter on branch points presents a new approach to the theorem that area minimizing solutions of Plateau ́s problem have no interior branch points.

Partial Differential Equations and Calculus of Variations

Partial Differential Equations and Calculus of Variations PDF Author: Stefan Hildebrandt
Publisher: Springer
ISBN: 3540460241
Category : Mathematics
Languages : en
Pages : 433

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Book Description
This volume contains 18 invited papers by members and guests of the former Sonderforschungsbereich in Bonn (SFB 72) who, over the years, collaborated on the research group "Solution of PDE's and Calculus of Variations". The emphasis is on existence and regularity results, on special equations of mathematical physics and on scattering theory.

A variational problem for constant mean curvature surfaces with free boundary

A variational problem for constant mean curvature surfaces with free boundary PDF Author: Maria Athanassenas
Publisher:
ISBN:
Category :
Languages : de
Pages : 15

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Variational Methods for Free Surface Interfaces

Variational Methods for Free Surface Interfaces PDF Author: Paul Concus
Publisher: Springer Science & Business Media
ISBN: 1461246563
Category : Science
Languages : en
Pages : 201

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Book Description
Vallombrosa Center was host during the week September 7-12, 1985 to about 40 mathematicians, physical scientists, and engineers, who share a common interest in free surface phenomena. This volume includes a selection of contributions by participants and also a few papers by interested scientists who were unable to attend in person. Although a proceedings volume cannot recapture entirely the stimulus of personal interaction that ultimately is the best justification for such a gathering, we do offer what we hope is a representative sampling of the contributions, indicating something of the varied and interrelated ways with which these classical but largely unsettled questions are currently being attacked. For the participants, and also for other specialists, the 23 papers that follow should help to establish and to maintain the new ideas and insights that were presented, as active working tools. Much of the material will certainly be of interest also for a broader audience, as it impinges and overlaps with varying directions of scientific development. On behalf of the organizing committee, we thank the speakers for excellent, well-prepared lectures. Additionally, the many lively informal discussions did much to contribute to the success of the conference.