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math.GT2016
Counterexamples to the quadrisecant approximation conjecture
Sheng Bai, Chao Wang, Jiajun Wang
A quadrisecant of a knot is a straight line intersecting the knot at four points. If a knot has finitely many quadrisecants, one can replace each subarc between two adjacent secant…
math.GT2016
The most symmetric surfaces in the 3-torus
Sheng Bai, Vanessa Robins, Chao Wang +1
Suppose an orientation preserving action of a finite group on the closed surface of genus extends over the 3-torus for some embedding . Then $…