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[几何] 边界为三叶结的曲面

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hbghlyj posted 2025-2-19 02:15 |Read mode
三叶结定义为$\displaystyle \mathbb {C} ^{2}$中球面$|z|^{2}+|w|^{2}=1$和曲面$z^{2}+w^{3}=0$的交。

边界为三叶结的曲面:
1024px-Superfície_não_orientável_-_Bordo_trifólio[1].jpg

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original poster hbghlyj posted 2025-2-19 02:19
如图,求边界为三叶结的曲面的方程

如果三叶结的长度参数方程为$f(t),0\le t\le 2$,那么边界为三叶结的曲面是不是$f(t)$和$f(t+1\mod2)$的连线上的点?

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