Arxiv
| Presentation Name： | Complete convex surfaces and their umbilics |
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| Presenter： | Prof. Wilhelm Klingenberg |
| Date： | 2019-04-02 |
| Location： | 光华东主楼2001 |
| Abstract： | We will outline a proof, in collaboration with Brendan Guilfoyle, of the following conjecture of Victor Andreevich Toponogov from 1999: Every convex complete embedded surface of the type of the plane has at least one umbilic, if only at infinity.
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| Annual Speech Directory： | No.47 |
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