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Let the stick number of a knot be the least number of straight sticks needed to make a knot . The smallest stick number of any knot is , where is the trefoil knot. If and are knots, then
For a nontrivial knot , let be the link crossing number (i.e., the least number of crossings in any projection of ). Then
Stick numbers are implemented in the Wolfram Language as KnotData[knot, "StickNumber"].
The following table gives the stick number for knots on 10 or fewer crossings.
3 | 9 | 11 | 12 | 11 | 12 | 11 | 11 | 10 | |||||||||
6 | 9 | 10 | 12 | 12 | 11 | 12 | 10 | 10 | |||||||||
7 | 9 | 11 | 12 | 12 | 12 | 11 | 10 | 10 | |||||||||
8 | 8 | 10 | 11 | 13 | 11 | 11 | 10 | 10 | |||||||||
8 | 8 | 9 | 12 | 11 | 12 | 12 | 10 | 10 | |||||||||
8 | 9 | 10 | 11 | 11 | 12 | 12 | 11 | 10 | |||||||||
8 | 10 | 10 | 11 | 11 | 12 | 10 | 10 | 10 | |||||||||
8 | 11 | 10 | 11 | 12 | 13 | 11 | 11 | 10 | |||||||||
9 | 11 | 10 | 11 | 12 | 12 | 10 | 10 | 11 | |||||||||
9 | 10 | 9 | 12 | 11 | 12 | 12 | 10 | 10 | |||||||||
9 | 10 | 10 | 11 | 12 | 13 | 11 | 10 | ||||||||||
9 | 11 | 11 | 11 | 12 | 12 | 10 | 11 | ||||||||||
9 | 10 | 10 | 12 | 10 | 12 | 10 | 11 | ||||||||||
9 | 10 | 10 | 11 | 11 | 11 | 10 | 10 | ||||||||||
9 | 10 | 10 | 12 | 12 | 13 | 12 | 10 | ||||||||||
10 | 10 | 9 | 12 | 12 | 11 | 11 | 10 | ||||||||||
10 | 11 | 9 | 12 | 11 | 12 | 11 | 11 | ||||||||||
10 | 10 | 9 | 12 | 12 | 11 | 10 | 11 | ||||||||||
10 | 10 | 10 | 12 | 12 | 14 | 10 | 10 | ||||||||||
10 | 10 | 9 | 11 | 12 | 11 | 11 | 10 | ||||||||||
10 | 11 | 10 | 12 | 11 | 11 | 10 | 10 | ||||||||||
10 | 10 | 9 | 11 | 12 | 11 | 12 | 10 | ||||||||||
10 | 10 | 9 | 12 | 12 | 11 | 11 | 11 | ||||||||||
10 | 11 | 10 | 11 | 11 | 11 | 10 | 11 | ||||||||||
10 | 10 | 9 | 12 | 11 | 11 | 10 | 10 | ||||||||||
10 | 10 | 11 | 12 | 11 | 11 | 10 | 10 | ||||||||||
10 | 11 | 11 | 11 | 12 | 11 | 10 | 11 | ||||||||||
10 | 10 | 12 | 11 | 11 | 11 | 11 | 11 | ||||||||||
10 | 11 | 11 | 12 | 13 | 11 | 10 | 11 | ||||||||||
10 | 10 | 11 | 12 | 12 | 12 | 10 | 10 |
REFERENCES:
Adams, C. C. The Knot Book: An Elementary Introduction to the Mathematical Theory of Knots. New York: W. H. Freeman, pp. 27-30, 1994.
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