Embeddings and Immersions

Embeddings and Immersions PDF Author: Masahisa Adachi
Publisher: American Mathematical Soc.
ISBN: 9780821846124
Category : Mathematics
Languages : en
Pages : 202

Get Book

Book Description
This book covers fundamental techniques in the theory of $C^{\infty}$-imbeddings and $C^{\infty}$-immersions, emphasizing clear intuitive understanding and containing many figures and diagrams. Adachi starts with an introduction to the work of Whitney and of Haefliger on $C^{\infty}$-imbeddings and $C^{\infty}$-manifolds. The Smale-Hirsch theorem is presented as a generalization of the classification of $C^{\infty}$-imbeddings by isotopy and is extended by Gromov's work on the subject, including Gromov's convex integration theory. Finally, as an application of Gromov's work, the author introduces Haefliger's classification theorem of foliations on open manifolds. Also described here is the Adachi's work with Landweber on the integrability of almost complex structures on open manifolds. This book would be an excellent text for upper-division undergraduate or graduate courses.

Embeddings and Immersions

Embeddings and Immersions PDF Author: Masahisa Adachi
Publisher: American Mathematical Soc.
ISBN: 9780821846124
Category : Mathematics
Languages : en
Pages : 202

Get Book

Book Description
This book covers fundamental techniques in the theory of $C^{\infty}$-imbeddings and $C^{\infty}$-immersions, emphasizing clear intuitive understanding and containing many figures and diagrams. Adachi starts with an introduction to the work of Whitney and of Haefliger on $C^{\infty}$-imbeddings and $C^{\infty}$-manifolds. The Smale-Hirsch theorem is presented as a generalization of the classification of $C^{\infty}$-imbeddings by isotopy and is extended by Gromov's work on the subject, including Gromov's convex integration theory. Finally, as an application of Gromov's work, the author introduces Haefliger's classification theorem of foliations on open manifolds. Also described here is the Adachi's work with Landweber on the integrability of almost complex structures on open manifolds. This book would be an excellent text for upper-division undergraduate or graduate courses.

Topological Methods in Euclidean Spaces

Topological Methods in Euclidean Spaces PDF Author: Gregory L. Naber
Publisher: Courier Corporation
ISBN: 0486153444
Category : Mathematics
Languages : en
Pages : 276

Get Book

Book Description
Extensive development of such topics as elementary combinatorial techniques, Sperner's Lemma, the Brouwer Fixed Point Theorem, and the Stone-Weierstrass Theorem. New section of solutions to selected problems.

Isometric Embedding of Riemannian Manifolds in Euclidean Spaces

Isometric Embedding of Riemannian Manifolds in Euclidean Spaces PDF Author: Qing Han
Publisher: American Mathematical Soc.
ISBN: 0821840711
Category : Algebraic spaces
Languages : en
Pages : 278

Get Book

Book Description
The question of the existence of isometric embeddings of Riemannian manifolds in Euclidean space is already more than a century old. This book presents, in a systematic way, results both local and global and in arbitrary dimension but with a focus on the isometric embedding of surfaces in ${\mathbb R}^3$. The emphasis is on those PDE techniques which are essential to the most important results of the last century. The classic results in this book include the Janet-Cartan Theorem, Nirenberg's solution of the Weyl problem, and Nash's Embedding Theorem, with a simplified proof by Gunther. The book also includes the main results from the past twenty years, both local and global, on the isometric embedding of surfaces in Euclidean 3-space. The work will be indispensable to researchers in the area. Moreover, the authors integrate the results and techniques into a unified whole, providing a good entry point into the area for advanced graduate students or anyone interested in this subject. The authors avoid what is technically complicated. Background knowledge is kept to an essential minimum: a one-semester course in differential geometry and a one-year course in partial differential equations.

Embeddings in Manifolds

Embeddings in Manifolds PDF Author: Robert J. Daverman
Publisher: American Mathematical Soc.
ISBN: 0821836978
Category : Mathematics
Languages : en
Pages : 496

Get Book

Book Description
A topological embedding is a homeomorphism of one space onto a subspace of another. The book analyzes how and when objects like polyhedra or manifolds embed in a given higher-dimensional manifold. The main problem is to determine when two topological embeddings of the same object are equivalent in the sense of differing only by a homeomorphism of the ambient manifold. Knot theory is the special case of spheres smoothly embedded in spheres; in this book, much more general spaces and much more general embeddings are considered. A key aspect of the main problem is taming: when is a topological embedding of a polyhedron equivalent to a piecewise linear embedding? A central theme of the book is the fundamental role played by local homotopy properties of the complement in answering this taming question. The book begins with a fresh description of the various classic examples of wild embeddings (i.e., embeddings inequivalent to piecewise linear embeddings). Engulfing, the fundamental tool of the subject, is developed next. After that, the study of embeddings is organized by codimension (the difference between the ambient dimension and the dimension of the embedded space). In all codimensions greater than two, topological embeddings of compacta are approximated by nicer embeddings, nice embeddings of polyhedra are tamed, topological embeddings of polyhedra are approximated by piecewise linear embeddings, and piecewise linear embeddings are locally unknotted. Complete details of the codimension-three proofs, including the requisite piecewise linear tools, are provided. The treatment of codimension-two embeddings includes a self-contained, elementary exposition of the algebraic invariants needed to construct counterexamples to the approximation and existence of embeddings. The treatment of codimension-one embeddings includes the locally flat approximation theorem for manifolds as well as the characterization of local flatness in terms of local homotopy properties.

Topological Imbeddings in Euclidean Space

Topological Imbeddings in Euclidean Space PDF Author: Li︠u︡dmila Vsevolodovna Keldysh
Publisher: American Mathematical Soc.
ISBN: 9780821818817
Category : Mathematics
Languages : en
Pages : 218

Get Book

Book Description
"This monograph is devoted to a presentation of the foundations of the set--theoretical theory of topological imbeddings in Euclidean space En and of a number of new results in this area." -- Introduction.

Isometric Embedding of Riemannian Manifolds in Euclidean Spaces

Isometric Embedding of Riemannian Manifolds in Euclidean Spaces PDF Author: Qing Han
Publisher: American Mathematical Society(RI)
ISBN: 9781470413576
Category : MATHEMATICS
Languages : en
Pages : 278

Get Book

Book Description
The question of the existence of isometric embeddings of Riemannian manifolds in Euclidean space is already more than a century old. This book presents, in a systematic way, results both local and global and in arbitrary dimension but with a focus on the isometric embedding of surfaces in ${\mathbb R} DEG

Topological Embeddings

Topological Embeddings PDF Author:
Publisher: Academic Press
ISBN: 9780080873671
Category : Mathematics
Languages : en
Pages : 315

Get Book

Book Description
Topological Embeddings

Equivariant Embeddings in Euclidean Space

Equivariant Embeddings in Euclidean Space PDF Author: G. D. Mostow
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 60

Get Book

Book Description


General Topology and Its Relations to Modern Analysis and Algebra 2

General Topology and Its Relations to Modern Analysis and Algebra 2 PDF Author: Z. Frolík
Publisher: Academic Press
ISBN: 1483223531
Category : Mathematics
Languages : en
Pages : 366

Get Book

Book Description
General Topology and Its Relations to Modern Analysis and Algebra II is comprised of papers presented at the Second Symposium on General Topology and its Relations to Modern Analysis and Algebra, held in Prague in September 1966. The book contains expositions and lectures that discuss various subject matters in the field of General Topology. The topics considered include the algebraic structure for a topology; the projection spectrum and its limit space; some special methods of homeomorphism theory in infinite-dimensional topology; types of ultrafilters on countable sets; the compactness operator in general topology; and the algebraic generalization of the topological theorems of Bolzano and Weierstrass. This publication will be found useful by all specialists in the field of Topology and mathematicians interested in General Topology.

Topology of Infinite-Dimensional Manifolds

Topology of Infinite-Dimensional Manifolds PDF Author: Katsuro Sakai
Publisher: Springer Nature
ISBN: 9811575754
Category : Mathematics
Languages : en
Pages : 619

Get Book

Book Description
An infinite-dimensional manifold is a topological manifold modeled on some infinite-dimensional homogeneous space called a model space. In this book, the following spaces are considered model spaces: Hilbert space (or non-separable Hilbert spaces), the Hilbert cube, dense subspaces of Hilbert spaces being universal spaces for absolute Borel spaces, the direct limit of Euclidean spaces, and the direct limit of Hilbert cubes (which is homeomorphic to the dual of a separable infinite-dimensional Banach space with bounded weak-star topology). This book is designed for graduate students to acquire knowledge of fundamental results on infinite-dimensional manifolds and their characterizations. To read and understand this book, some background is required even for senior graduate students in topology, but that background knowledge is minimized and is listed in the first chapter so that references can easily be found. Almost all necessary background information is found in Geometric Aspects of General Topology, the author's first book. Many kinds of hyperspaces and function spaces are investigated in various branches of mathematics, which are mostly infinite-dimensional. Among them, many examples of infinite-dimensional manifolds have been found. For researchers studying such objects, this book will be very helpful. As outstanding applications of Hilbert cube manifolds, the book contains proofs of the topological invariance of Whitehead torsion and Borsuk’s conjecture on the homotopy type of compact ANRs. This is also the first book that presents combinatorial ∞-manifolds, the infinite-dimensional version of combinatorial n-manifolds, and proofs of two remarkable results, that is, any triangulation of each manifold modeled on the direct limit of Euclidean spaces is a combinatorial ∞-manifold and the Hauptvermutung for them is true.