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Tunnel Number

Let a Knot $K$ be $n$-Embeddable. Then its tunnel number is a Knot invariant which is related to $n$.

See also Embeddable Knot


Adams, C. C. The Knot Book: An Elementary Introduction to the Mathematical Theory of Knots. New York: W. H. Freeman, p. 114, 1994.

© 1996-9 Eric W. Weisstein