Nakahara Definition 4.1:路径。完整条件以所列原文节点为准;不将同框中作为前提提及的概念视为被定义。
词性:名词
已登记的原文定义
Nakahara · second-edition-local · §4.1.2 · PDF 第141页
Definition 4.1. Let $X$ be a topological space and let $I = [0,1]$ . A continuous map $\alpha : I \to X$ is called a path with an initial point $x_0$ and an end point $x_1$ if $\alpha(0) = x_0$ and $\alpha(1) = x_1$ . If $\alpha(0) = \alpha(1) = x_0$ , the path is called a loop with base point $x_0$ (or a loop at $x_0$ ).
Nakahara Definition 4.1:路径。完整条件以所列原文节点为准;不将同框中作为前提提及的概念视为被定义。
Nakahara · second-edition-local · §4.1.2 · PDF 第141页
For $x \in X$ , a constant path $c_{x}: I \to X$ is defined by $c_{x}(s) = x, s \in I$ . A constant path is also a constant loop since $c_{x}(0) = c_{x}(1) = x$ . The set of paths or loops in a topological space $X$ may be endowed with an algebraic structure as follows.
Nakahara Definition 4.1:路径。完整条件以所列原文节点为准;不将同框中作为前提提及的概念视为被定义。
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。
Nakahara · second-edition-local
已登记出处中的最早位置:§1.4 · zh-CN。
| 位置 | 语言 | 登记角色 |
|---|---|---|
| §1.4 | zh-CN · 英文上下文 | 首次提及(不等于定义) |
| §4.1 | zh-CN · 英文上下文 | 定义入口 |
| §4.2 | zh-CN · 英文上下文 | 讨论 |
| §4.3 | zh-CN · 英文上下文 | 讨论 |
| §6.4 | zh-CN · 英文上下文 | 讨论 |
来源短摘录与定位
§1.4 · zh-CN · machine_draft · unreviewed
§4.1 · zh-CN · machine_draft · unreviewed
正文请在原位置阅读;长段落、数学边界或未定位引用不截断嵌入,精确范围与指纹保存在结构化索引。
§4.2 · zh-CN · machine_draft · unreviewed
正文请在原位置阅读;长段落、数学边界或未定位引用不截断嵌入,精确范围与指纹保存在结构化索引。
§4.3 · zh-CN · machine_draft · unreviewed
正文请在原位置阅读;长段落、数学边界或未定位引用不截断嵌入,精确范围与指纹保存在结构化索引。
§6.4 · zh-CN · machine_draft · unreviewed
正文请在原位置阅读;长段落、数学边界或未定位引用不截断嵌入,精确范围与指纹保存在结构化索引。
原文中已定位的引用(不自动视为依赖)
- href=”../chapter-04/01-section-4-1.md#bound-definition-886581a142e34900292cc0ea”
- href=“01-section-4-1.md#definition-4-1”
- href=”../chapter-02/03-section-2-3.md#bound-definition-bea63120260758e422dc7e27”
- href=“01-section-4-1.md#definition-4-2”
- [图 4.2](01-section-4-1.md#figure-4-2)
- href=“01-section-4-1.md#definition-4-3”
- href=”../chapter-02/03-section-2-3.md#section-2-3”
- href=”../chapter-02/03-section-2-3.md#bound-definition-bea63120260758e422dc7e27”
- href=“01-section-4-1.md#bound-definition-886581a142e34900292cc0ea”
- href=“03-section-4-3.md#lemma-4-2”
- href=“01-section-4-1.md#bound-definition-4a2489d02e04924c4017048c”
- href=”../chapter-09/02-section-9-2.md#bound-definition-07d72bb30b9788a7ca3d8aec”
- [引理 4.2](03-section-4-3.md#lemma-4-2)
- href=”../chapter-02/01-section-2-1.md#bound-definition-bb88bbb0cbdedf43846d8f4d”
- href=“01-section-4-1.md#bound-definition-72bf03999c4b5b7b12d6563a”
- href=“01-section-4-1.md#bound-definition-886581a142e34900292cc0ea”
- href=“03-section-4-3.md#theorem-4-5”
- href=“02-section-4-2.md#bound-definition-fa4f45b191b252ac80e92e28”
- href=“04-section-6-4.md#theorem-6-5”
- href=”../chapter-04/01-section-4-1.md#bound-definition-72bf03999c4b5b7b12d6563a”
- href=”../chapter-09/02-section-9-2.md#bound-definition-07d72bb30b9788a7ca3d8aec”
- [引理 6.1](04-section-6-4.md#lemma-6-1)
- [(6.57)](04-section-6-4.md#equation-6-57)
- href=”../chapter-04/01-section-4-1.md#bound-definition-886581a142e34900292cc0ea”
- [(6.59)](04-section-6-4.md#equation-6-59)
- [(6.56)](04-section-6-4.md#equation-6-56)
- href=“04-section-6-4.md#example-6-6”
- href=”../chapter-04/02-section-4-2.md#bound-definition-dd3051b34cdd1c57cb935a6d”
- href=“04-section-6-4.md#example-6-7”