Next, We give a briefer proof that uses the concept of homotopy of curves, In this course of the proof, we don't use the theorem of Jordan Curves.

  • 其次给出一个不用约当曲线定理而仅用同伦曲线概念的更为简洁的证法。

  • 互联网摘选 2025-01-20 00:03:14

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