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arXiv math/0610573math.GT
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同源球的悬浮液

Suspensions of homology spheres

Robert D. Edwards

摘要:

这篇文章是三个高度有影响力的文章之一的拓扑流形写的罗伯特D。爱德华兹在1970年代,但从未出版。它给出了传说中的双悬挂猜想的初始解。(The其他两条条文为:“通过同胚逼近某些胞状映射”和“拓扑正则邻域”)这三篇文章的手稿自创作以来一直私下流传。几何拓扑讲习班的组织者在国家科学基金会的支助下,协助编写了这些文章的电子版,以便向公众提供。第二条和第三条仍在拟订中。本文包含四个主要定理:I. Mazur的同调3-球面的双重悬置是一个5-球面,II.任何限定可收缩(n+1)-流形的同调n-球面的双重悬挂是(n+2)-球面,III。任何同调3-球的双重悬浮是5-球的细胞样图像。四.任何同调3-球面的三重悬置是一个6-球面。爱德华兹的证明。是第一个证据表明,暂停过程可以把一个非单连通流形到一个领域,从而回答了一个问题,一直困惑拓扑学家自20世纪50年代中期以来,如果不是更早。结果II、III和IV代表了解决一般双悬置猜想的重要进展:每个同调n-球面的双悬置是一个(n+2)-球面。[That猜想随后被J. W. Cannon(Annals of Math.110(1979),83-112).]

英文摘要:

This article is one of three highly influential articles on the topology of manifolds written by Robert D. Edwards in the 1970's but never published. It presents the initial solutions of the fabled Double Suspension Conjecture. (The other two articles are: 'Approximating certain cell-like maps by homeomorphisms' and 'Topological regular neighborhoods') The manuscripts of these three articles have circulated privately since their creation. The organizers of the Workshops in Geometric Topology (http://www.math.oregonstate.edu/~topology/workshop.htm) with the support of the National Science Foundation have facilitated the preparation of electronic versions of these articles to make them publicly available. The second and third articles are still in preparation. The current article contains four major theorems: I. The double suspension of Mazur's homology 3-sphere is a 5-sphere, II. The double suspension of any homology n-sphere that bounds a contractible (n+1)-manifold is an (n+2)-sphere, III. The double suspension of any homology 3-sphere is the cell-like image of a 5-sphere. IV. The triple suspension of any homology 3-sphere is a 6-sphere. Edwards' proof of I. was the first evidence that the suspension process could transform a non-simply connected manifold into a sphere, thereby answering a question that had puzzled topologists since the mid-1950's if not earlier. Results II, III and IV represent significant advances toward resolving the general double suspension conjecture: the double suspension of every homology n-sphere is an (n+2)-sphere. [That conjecture was subsequently proved by J. W. Cannon (Annals of Math. 110 (1979), 83-112).]

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