The 9469_{46} odd-index transformed FF-factor conjecture

Let 9469_{46} be the pretzel knot (3,3,3)(3,3,-3), and let FiF_i denote its iith FF-factor. Define FiF_i^* by applying the transformation AAq2A\mapsto Aq^2 to FiF_i and then multiplying by A2/q4A^2/q^4; equivalently,

Fi=A2q4Fi(Aq2,q).F_i^*=\frac{A^2}{q^4}F_i(Aq^2,q).

For odd positive integers i>1i>1, the quotient Fi/(1+A2q2(i1))F_i/(1+A^2q^{2(i-1)}) is therefore defined by the preceding divisibility conjecture.

The 9469_{46} transformed-factor conjecture.

q2(q2(i1)1)Fi1+A2q2(i1)Fi1.q^2(q^{2(i-1)}-1)\mid \frac{F_i}{1+A^2q^{2(i-1)}}-F^*_{i-1}.

This has been verified in the paper for odd integers 3i73\leq i\leq 7 and is proposed as a general pattern that may help derive arbitrary FF-factor formulas.

Sources & referencesView supporting material

Primary source

William Qin, “HOMFLY Polynomials of Pretzel Knots”, arXiv:2101.00695 (2021).

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