Crossing number of links formed by edges of a triangulation

Details Crossing number of links formed by edges of a triangulation Crossing number of links formed by edges of a triangulation

2001-10-17

arxiv.org/abs/math/0110174v1

J. Knot Theory Ramifications 12 (2003) 281-286

Mathematics

Geometric Topology

4 pages

Scientific paper

We study the crossing number of links that are formed by edges of a triangulation T of the 3-sphere with n tetrahedra. We show that the crossing number is bounded from above by an exponential function of n^2. In general, this bound can not be replaced by a subexponential bound. However, if T is polytopal (resp. shellable) then there is a quadratic (resp. biquadratic) upper bound in n for the crossing number. In our proof, we use a numerical invariant p(T), called polytopality, that we have introduced in math.GT/0009216.

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