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I apologize of already asked by someone else, but what (in your opinion) is the best package for computing HOMFLY polynomials?

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What do you mean by "best"? Is there something particular you'd like to accomplish? –  Ryan Budney Feb 19 '13 at 22:59
@Ryan: I want to compute the HOMFLY polynomial of (3,19) cable over trefoil. –  minimax Feb 20 '13 at 0:03
The KnotTheory` Mathematica package, available with lots of documentation and examples at katlas.org/wiki/Setup, can compute HOMFLY and many other knot polynomials and even produce cables for you automatically. –  Steven Sivek Feb 20 '13 at 0:21
@Steven: Thanks, I will try it out! –  minimax Feb 20 '13 at 1:11
There's also burtleburtle.net/bob/knot/homfly.html –  Loop Space Feb 20 '13 at 9:48

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