找回密码
 To register

QQ登录

只需一步,快速开始

扫一扫,访问微社区

Titlebook: Leitfaden der Technischen Mechanik; Statik · Festigkeits Hans Göldner,Franz Holzweißig Textbook 1988Latest edition Springer-Verlag Berlin H

[复制链接]
楼主: 远见
发表于 2025-3-26 23:01:15 | 显示全部楼层
发表于 2025-3-27 01:37:34 | 显示全部楼层
Hans Göldner,Franz Holzweißigand .—we require that the intersection form ω be positive definite, the first Betti number . vanish, and the dimension of . be 3—and that there is real trouble if we relax any of these constraints. The differential topologists Ronald Fintushel and Ronald Stern noticed that for . = .(3), i.e., for or
发表于 2025-3-27 05:46:55 | 显示全部楼层
Hans Göldner,Franz HolzweißigA basic problem is to ascertain when a topological manifold admits a . structure and, if it does, whether there is also a compatible smooth structure. By the early 1950’s it was known that every topological manifold of dimension less than or equal to three admits a unique smooth structure. In 1968 K
发表于 2025-3-27 10:42:18 | 显示全部楼层
发表于 2025-3-27 16:56:46 | 显示全部楼层
Hans Göldner,Franz Holzweißigitute in Berkeley during its first few months of existence. Dan Freed (the junior author) was originally appointed as notetaker. The express purpose of the seminar was to go through a proof of Simon Donaldson‘s Theorem, which had been announced the previous spring. Donaldson proved the nonsmoothabil
发表于 2025-3-27 19:25:37 | 显示全部楼层
发表于 2025-3-28 01:21:59 | 显示全部楼层
发表于 2025-3-28 03:57:29 | 显示全部楼层
Hans Göldner,Franz Holzweißigmportant ramifications for 3-manifold topology, we include an “easy” case of their theorem in this chapter. The difficulties in harder cases are not in the analysis, but arise mostly from the number theory of the intersection form, and we provide enough information so that the reader can fill in the
发表于 2025-3-28 07:16:07 | 显示全部楼层
发表于 2025-3-28 13:38:26 | 显示全部楼层
 关于派博传思  派博传思旗下网站  友情链接
派博传思介绍 公司地理位置 论文服务流程 影响因子官网 SITEMAP 大讲堂 北京大学 Oxford Uni. Harvard Uni.
发展历史沿革 期刊点评 投稿经验总结 SCIENCEGARD IMPACTFACTOR 派博系数 清华大学 Yale Uni. Stanford Uni.
|Archiver|手机版|小黑屋| 派博传思国际 ( 京公网安备110108008328) GMT+8, 2025-6-25 15:44
Copyright © 2001-2015 派博传思   京公网安备110108008328 版权所有 All rights reserved
快速回复 返回顶部 返回列表