Conjecture on the third term of lens surgery polynomials

Let pp and kk be relatively prime positive integers. Let Kp,kK_{p,k} be the lens space knot in the homology sphere Yp,kY_{p,k} dual to a simple (1,1)(1,1)-knot in a lens space, with parameters (p,k)(p,k). Let ΔKp,k(t)\Delta_{K_{p,k}}(t) denote its symmetrized Alexander polynomial, and suppose its third top term is non-zero. Third-term conjecture. Then there is an integer gg such that

ΔKp,k(t)=ΔT(2,2g+1)(t),\Delta_{K_{p,k}}(t)=\Delta_{T(2,2g+1)}(t),

or, equivalently, k=2k=2. The conjecture concerns a criterion forcing the Alexander polynomial of these lens space knots to be that of an odd (2,2g+1)(2,2g+1)-torus knot; the supplied text does not state whether it has been resolved.

Sources & referencesView supporting material

Primary source

Motoo Tange, “The third term in lens surgery polynomials”, arXiv:2005.09004 (2020).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.