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Gauss's Double Point Theorem

If a sequence of Double Points is passed as a Closed Curve is traversed, each Double Point appears once in an Even place and once in an Odd place.


Rademacher, H. and Toeplitz, O. The Enjoyment of Mathematics: Selections from Mathematics for the Amateur. Princeton, NJ: Princeton University Press, pp. 61-66, 1957.

© 1996-9 Eric W. Weisstein