**The figure-eight knot 4**_{1} (22) is amphicheiral:
it is equivalent to its mirror image [10].

**The figure-eight knot 4**_{1} (22) as the
antisymmetrical graph on a sphere [22].
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**The rigidly achiral ***S*_{4} presentation of
the figure-eight knot 4_{1} (22) [**22].
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**Centro-antisymmetrical presentations of amphicheiral
rational knots (***n* £ 10).