Minimality and Stability Properties in Sobolev and Isoperimetric Inequalities

Minimality and Stability Properties in Sobolev and Isoperimetric Inequalities PDF Author: Robin Tonra Neumayer
Publisher:
ISBN:
Category :
Languages : en
Pages : 400

Get Book Here

Book Description
This thesis addresses the characterization of minimizers in various Sobolev- and isoperimetric-type inequalities and the analysis of the corresponding stability phenomena. We first investigate a family of variational problems which arise in connection to a suitable interpolation between the classical Sobolev and Sobolev trace inequalities. We provide a full characterization of minimizers for each problem, in turn deriving a new family of sharp constrained Sobolev inequalities on the half-space. We then prove novel stability results for the Sobolev inequality and for the anisotropic isoperimetric inequality. Both of these results share the feature of being “strong-form” stability results, in the sense that the deficit in the inequality is shown to control the strongest possible distance to the family of equality cases.

Minimality and Stability Properties in Sobolev and Isoperimetric Inequalities

Minimality and Stability Properties in Sobolev and Isoperimetric Inequalities PDF Author: Robin Tonra Neumayer
Publisher:
ISBN:
Category :
Languages : en
Pages : 400

Get Book Here

Book Description
This thesis addresses the characterization of minimizers in various Sobolev- and isoperimetric-type inequalities and the analysis of the corresponding stability phenomena. We first investigate a family of variational problems which arise in connection to a suitable interpolation between the classical Sobolev and Sobolev trace inequalities. We provide a full characterization of minimizers for each problem, in turn deriving a new family of sharp constrained Sobolev inequalities on the half-space. We then prove novel stability results for the Sobolev inequality and for the anisotropic isoperimetric inequality. Both of these results share the feature of being “strong-form” stability results, in the sense that the deficit in the inequality is shown to control the strongest possible distance to the family of equality cases.

Isoperimetric Inequalities in Riemannian Manifolds

Isoperimetric Inequalities in Riemannian Manifolds PDF Author: Manuel Ritoré
Publisher: Springer Nature
ISBN: 3031379012
Category : Mathematics
Languages : en
Pages : 470

Get Book Here

Book Description
This work gives a coherent introduction to isoperimetric inequalities in Riemannian manifolds, featuring many of the results obtained during the last 25 years and discussing different techniques in the area. Written in a clear and appealing style, the book includes sufficient introductory material, making it also accessible to graduate students. It will be of interest to researchers working on geometric inequalities either from a geometric or analytic point of view, but also to those interested in applying the described techniques to their field.

Manfredo P. do Carmo – Selected Papers

Manfredo P. do Carmo – Selected Papers PDF Author: Manfredo P. do Carmo
Publisher: Springer Science & Business Media
ISBN: 3642255884
Category : Mathematics
Languages : en
Pages : 492

Get Book Here

Book Description
This volume of selected academic papers demonstrates the significance of the contribution to mathematics made by Manfredo P. do Carmo. Twice a Guggenheim Fellow and the winner of many prestigious national and international awards, the professor at the institute of Pure and Applied Mathematics in Rio de Janeiro is well known as the author of influential textbooks such as Differential Geometry of Curves and Surfaces. The area of differential geometry is the main focus of this selection, though it also contains do Carmo's own commentaries on his life as a scientist as well as assessment of the impact of his researches and a complete list of his publications. Aspects covered in the featured papers include relations between curvature and topology, convexity and rigidity, minimal surfaces, and conformal immersions, among others. Offering more than just a retrospective focus, the volume deals with subjects of current interest to researchers, including a paper co-authored with Frank Warner on the convexity of hypersurfaces in space forms. It also presents the basic stability results for minimal surfaces in the Euclidean space obtained by the author and his collaborators. Edited by do Carmo's first student, now a celebrated academic in her own right, this collection pays tribute to one of the most distinguished mathematicians.

Some Connections between Isoperimetric and Sobolev-type Inequalities

Some Connections between Isoperimetric and Sobolev-type Inequalities PDF Author: Serguei Germanovich Bobkov
Publisher: American Mathematical Soc.
ISBN: 0821806424
Category : Art
Languages : en
Pages : 127

Get Book Here

Book Description
For Borel probability measures on metric spaces, this text studies the interplay between isoperimetric and Sobolev-type inequalities. In particular the question of finding optimal constants via isoperimetric quantities is explored. Also given are necessary and sufficient conditions for the equivalence between the extremality of some sets in the isoperimetric problem and the validity of some analytic inequalities. The book devotes much attention to: the probability distributions on the real line; the normalized Lebesgue measure on the Euclidean sheres; and the canonical Gaussian measure on the Euclidean space.

The Chern Symposium 1979

The Chern Symposium 1979 PDF Author: W.-Y. Hsiang
Publisher: Springer Science & Business Media
ISBN: 1461381096
Category : Mathematics
Languages : en
Pages : 258

Get Book Here

Book Description
This volume attests to the vitality of differential geometry as it probes deeper into its internal structure and explores ever widening connections with other subjects in mathematics and physics. To most of us Professor S. S. Chern is modern differential geometry, and we, his students, are grateful to him for leading us to this fertile landscape. The aims of the symposium were to review recent developments in geometry and to expose and explore new areas of research. It was our way of honoring Professor Chern upon the occasion of his official retirement as Professor of Mathematics at the University of California. This book is a record of the scientific events of the symposium and reflects Professor Chern's wide interest and influence. The conference also reflected Professor Chern's personality. It was a serious occasion, active yet relaxed, mixed with gentleness and good humor. We wish him good health, a long life, happiness, and a continuation of his extraordinarily deep and original contributions to mathematics. I. M. Singer Contents Real and Complex Geometry in Four Dimensions M. F. ATIYAH. . . . . . . . . . . . . Equivariant Morse Theory and the Yang-Mills Equation on Riemann Surfaces RAOUL BaTT .. 11 Isometric Families of Kahler Structures EUGENIO CALABI. . 23 Two Applications of Algebraic Geometry to Entire Holomorphic Mappings MARK GREEN AND PHILLIP GRIFFITHS. • . . . • . . 41 The Canonical Map for Certain Hilbert Modular Surfaces F. HIRZEBRUCH . . . . . • . . . . . . . . . 75 Tight Embeddings and Maps. Submanifolds of Geometrical Class Three in EN NICOLAAS H. KUIPER .

Nonlocal Perimeter, Curvature and Minimal Surfaces for Measurable Sets

Nonlocal Perimeter, Curvature and Minimal Surfaces for Measurable Sets PDF Author: José M. Mazón
Publisher: Springer
ISBN: 3030062430
Category : Mathematics
Languages : en
Pages : 123

Get Book Here

Book Description
This book highlights the latest developments in the geometry of measurable sets, presenting them in simple, straightforward terms. It addresses nonlocal notions of perimeter and curvature and studies in detail the minimal surfaces associated with them. These notions of nonlocal perimeter and curvature are defined on the basis of a non-singular kernel. Further, when the kernel is appropriately rescaled, they converge toward the classical perimeter and curvature as the rescaling parameter tends to zero. In this way, the usual notions can be recovered by using the nonlocal ones. In addition, nonlocal heat content is studied and an asymptotic expansion is obtained. Given its scope, the book is intended for undergraduate and graduate students, as well as senior researchers interested in analysis and/or geometry.

Geometric Measure Theory and the Calculus of Variations

Geometric Measure Theory and the Calculus of Variations PDF Author: William K. Allard
Publisher: American Mathematical Soc.
ISBN: 0821814702
Category : Mathematics
Languages : en
Pages : 482

Get Book Here

Book Description
Includes twenty-six papers that survey a cross section of work in modern geometric measure theory and its applications in the calculus of variations. This title provides an access to the material, including introductions and summaries of many of the authors' much longer works and a section containing 80 open problems in the field.

An Initiation to Logarithmic Sobolev Inequalities

An Initiation to Logarithmic Sobolev Inequalities PDF Author: Gilles Royer
Publisher: American Mathematical Soc.
ISBN: 9780821844014
Category : Mathematics
Languages : en
Pages : 132

Get Book Here

Book Description
This is an introduction to logarithmic Sobolev inequalities with some important applications to mathematical statistical physics. Royer begins by gathering and reviewing the necessary background material on selfadjoint operators, semigroups, Kolmogorov diffusion processes, and solutions of stochastic differential equations.

Proceedings of Symposia in Pure Mathematics

Proceedings of Symposia in Pure Mathematics PDF Author:
Publisher:
ISBN:
Category : Geometric measure theory
Languages : en
Pages : 490

Get Book Here

Book Description


The Global Nonlinear Stability of the Minkowski Space (PMS-41)

The Global Nonlinear Stability of the Minkowski Space (PMS-41) PDF Author: Demetrios Christodoulou
Publisher: Princeton University Press
ISBN: 1400863171
Category : Mathematics
Languages : en
Pages : 525

Get Book Here

Book Description
The aim of this work is to provide a proof of the nonlinear gravitational stability of the Minkowski space-time. More precisely, the book offers a constructive proof of global, smooth solutions to the Einstein Vacuum Equations, which look, in the large, like the Minkowski space-time. In particular, these solutions are free of black holes and singularities. The work contains a detailed description of the sense in which these solutions are close to the Minkowski space-time, in all directions. It thus provides the mathematical framework in which we can give a rigorous derivation of the laws of gravitation proposed by Bondi. Moreover, it establishes other important conclusions concerning the nonlinear character of gravitational radiation. The authors obtain their solutions as dynamic developments of all initial data sets, which are close, in a precise manner, to the flat initial data set corresponding to the Minkowski space-time. They thus establish the global dynamic stability of the latter. Originally published in 1994. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.