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On the four-vertex theorem

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  1. Fachbereich Mathematik, TU Berlin, Straße des 17. Juni 135, D-1000, Berlin 12, West Germany

    U. Pinkall

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  1. U. Pinkall
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Dedicated to Professor Otto Haupt with best wishes on his 100th birthday.

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Pinkall, U. On the four-vertex theorem. Aeq. Math. 34, 221–230 (1987). https://doi.org/10.1007/BF01830673

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