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第三百零六章 黎曼罗赫定理(拓扑学、流形)(1 / 1)

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黎曼和他的学生古斯塔·罗赫已经开始着手研究关于空间流形的亏格理论。

这是一种研究流形有几个洞的学问,在欧拉多面体亏格理论中已经得到发扬。

黎曼对罗赫说:“我们开始使用复数坐标系中的数形结合,对不同的亏格物进行研究吧。”

罗赫说:“我们要明白亏格在复数流形中,到底是一个什么形式,是零和无穷吗?”

黎曼说:“没错,这就是洞,这两个是一样的东西。零和无穷大在表示中仅仅是互为倒数罢了。”

罗赫说:“那除了这两种洞以为,流形的其他地方必须是光滑而紧密的,这样才合理,不能出现多个甚至无数个漏洞。说白了,就是除了极点的洞以外,其他地方绝对没有洞这种结构存在。这样的流形就是亚纯函数。”

黎曼说:“没错,我们需要构造各种各样我们想要的各种流形。就像我们在直角坐标系想要画出各种函数图像那样来。”

罗赫说:“我们把这些流形,进行分类,或者还没全画出来的时候,就可以分类再说。”

黎曼说:“你知道如何分类吗?”

罗赫说:“就目前而言,按照洞的个数分类,也就是亏格的数值分类。”

黎曼说:“我们分完类后,就要使用代数表示的方法,将其归类,只要看到方程,就一下子知道这个流形有几个洞,甚至是其他重要的性质。”

罗赫说:“如果要是这样的话,就需要找到单元函数来构造,这种单元就是即合理最基本的结构。比如说直线、圆等等。”

黎曼和罗赫说的单元结构就是代数簇。

喜欢数学心请大家收藏:数学心本站更新速度全网最快。

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