Mathematics – Geometric Topology
Scientific paper
2011-03-16
Mathematics
Geometric Topology
23 pages, 20 figures
Scientific paper
In this paper we are interested in symmetries of alternating knots, more precisely in those related to achirality. We call the following statement Tait's Conjecture on alternating -achiral knots: Let K be an alternating -achiral knot. Then there exists a minimal projection {\Pi} of K in S^2 \subset S^3 and an involution {\phi}:S^3\toS^3 such that: 1) {\phi} reverses the orientation of $S^3$; 2) {\phi}(S^2) = S^2; 3) {\phi} ({\Pi}) = {\Pi}; 4) {\phi} has two fixed points on {\Pi} and hence reverses the orientation of K. The purpose of this paper is to prove this statement.
Ermotti Nicola
Quach Hongler Cam Van
Weber Claude
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