Sobolev maps to the circle : from the perspective of analysis, geometry, and topology / Haïm Brezis, Petru Mironescu.
Brézis, H. (Haim), author.; Mironescu, Petru, author.
2021
QA323
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Title Sobolev maps to the circle : from the perspective of analysis, geometry, and topology / Haïm Brezis, Petru Mironescu.
Author Brézis, H. (Haim), author.
ISBN 9781071615126 (electronic bk.)
1071615122 (electronic bk.)
9781071615102 (print)
DOI https://doi.org/10.1007/978-1-0716-1512-6
Published New York, NY : Birkhäuser, 2021.
Language English
Description 1 online resource (xxxi, 530 pages) : illustrations (some color).
Item Number 10.1007/978-1-0716-1512-6 doi
Call Number QA323
Dewey Decimal Classification 515/.782
Summary The theory of real-valued Sobolev functions is a classical part of analysis and has a wide range of applications in pure and applied mathematics. By contrast, the study of manifold-valued Sobolev maps is relatively new. The incentive to explore these spaces arose in the last forty years from geometry and physics. This monograph is the first to provide a unified, comprehensive treatment of Sobolev maps to the circle, presenting numerous results obtained by the authors and others. Many surprising connections to other areas of mathematics are explored, including the Monge-Kantorovich theory in optimal transport, items in geometric measure theory, Fourier series, and non-local functionals occurring, for example, as denoising filters in image processing. Numerous digressions provide a glimpse of the theory of sphere-valued Sobolev maps. Each chapter focuses on a single topic and starts with a detailed overview, followed by the most significant results, and rather complete proofs. The "Complements and Open Problems" sections provide short introductions to various subsequent developments or related topics, and suggest new directions of research. Historical perspectives and a comprehensive list of references close out each chapter. Topics covered include lifting, point and line singularities, minimal connections and minimal surfaces, uniqueness spaces, factorization, density, Dirichlet problems, trace theory, and gap phenomena. Sobolev Maps to the Circle will appeal to mathematicians working in various areas, such as nonlinear analysis, PDEs, geometric analysis, minimal surfaces, optimal transport, and topology. It will also be of interest to physicists working on liquid crystals and the Ginzburg-Landau theory of superconductors.
Bibliography, etc. Note Includes bibliographical references and indexes.
Access Note Access limited to authorized users.
Source of Description Online resource; title from PDF title page (SpringerLink, viewed January 4, 2022).
Added Author Mironescu, Petru, author.
Series Progress in nonlinear differential equations and their applications ; v. 96. 2374-0280
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Lifting in $W^{1,p}$
The Geometry of $J(u)$ and $\Sigma(u)$ in 2D; Point Singularities and Minimal Connections
The Geometry of $J(u)$ and $\Sigma(u)$ in 3D (and higher); Line Singularities and Minimal Surfaces
A Digression: Sphere-Valued Maps
Lifting in Fractional Sobolev Spaces and in $VMO$
Uniqueness of Lifting and Beyond
Factorization
Applications of the Factorization
Estimates of Phases: Positive and Negative Results
Density
Traces
Degree
Dirichlet Problems, Gaps, Infinite Energies
Domains with Topology
Appendices.

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