按作者与版本查阅
以下按已登记位置排列。出现顺序、原文引用与已登记依赖分别展示;最早位置不代表全书首次定义。
Szekeres · source-snapshot-bc3404156f6e
已登记出处中的最早位置:§15.2 · zh-CN。
来源短摘录与定位
§15.2 · zh-CN · translation · unreviewed
一个微分同胚(diffeomorphism)是一个一一映射,且与均可微。若存在微分同胚,则称两个流形与微分同胚,记作;当然,两个流形的维数必须相等,。一个奇特而困难的事实是,存在具有多于一个不等价可微结构的拓扑流形。
§15.2 · en · original_transcription · unreviewed
A diffeomorphism is a map that is one-to-one and both and are differentiable. Two manifolds and are said to be diffeomorphic, written if there exists a diffeomorphism ; the dimensions of the two manifolds must of course be equal, . It is a curious and difficult fact that there exist topological manifolds with more than one inequivalent differentiable structure.