|描述：||1 online resource (x, 155 pages) : illustrations.|
|内容：||Elliptic Three-Manifolds and the Smale Conjecture --
Diffeomorphisms and Embeddings of Manifolds --
The Method of Cerf and Palais --
Elliptic Three-Manifolds Containing One-Sided Klein Bottles --
|丛书名：||Lecture notes in mathematics (Springer-Verlag), 2055.|
|责任：||Sungbok Hong [and others].|
This work concerns the diffeomorphism groups of 3-manifolds, in particular of elliptic 3-manifolds. These are the closed 3-manifolds that admit a Riemannian metric of constant positive curvature, now known to be exactly the closed 3-manifolds that have a finite fundamental group. The (Generalized) Smale Conjecture asserts that for any elliptic 3-manifold M, the inclusion from the isometry group of M to its diffeomorphism group is a homotopy equivalence. The original Smale Conjecture, for the 3-sphere, was proven by J. Cerf and A. Hatcher, and N. Ivanov proved the generalized conjecture for many of the elliptic 3-manifolds that contain a geometrically incompressible Klein bottle. The main results establish the Smale Conjecture for all elliptic 3-manifolds containing geometrically incompressible Klein bottles, and for all lens spaces L(m, q) with m at least 3. Additional results imply that for a Haken Seifert-fibered 3 manifold V, the space of Seifert fiberings has contractible components, and apart from a small list of known exceptions, is contractible. Considerable foundational and background material on diffeomorphism groups is included.