Seifert CircleEliminate each knot crossing by connecting each of the strands coming into the crossing to the adjacent strand leavingthe crossing. The resulting strands no longer cross but form instead a set of nonintersecting Circles called Seifert circles.
References
Adams, C. C. The Knot Book: An Elementary Introduction to the Mathematical Theory of Knots. New York: W. H. Freeman, p. 96, 1994.
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