Perko Move

See also

Explore with Wolfram|Alpha

More things to try:

• 1/4 * (4 - 1/2)
• fifth root of 59049
• Is sqrt(1-1/5+1/9) a rational number?

References

Hoste, J.; Thistlethwaite, M.; and Weeks, J. "The First Knots." Math. Intell. 20, 33-48, Fall 1998.

Referenced on Wolfram|Alpha

Cite this as:

Weisstein, Eric W. "Perko Move." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PerkoMove.html

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