Hoste–Shanahan commensurability conjecture for 2-bridge knots

Let J(m,n)J(m,n) be the 2-bridge knot in the stated family, and let S3J(m,n)\mathbb S^3-J(m,n) denote its complement. A knot is fibered when its complement is a surface bundle over S1\mathbb S^1; a knot complement is commensurable to another knot complement when the two complements have a common finite-sheeted cover. A Z/2Z\mathbb Z/2\mathbb Z-homology sphere is a 33-manifold with the same homology as S3\mathbb S^3 with coefficients in Z/2Z\mathbb Z/2\mathbb Z.

Hoste–Shanahan's commensurability conjecture. The complement S3J(m,n)\mathbb S^3-J(m,n) is commensurable to a fibered knot in a Z/2Z\mathbb Z/2\mathbb Z-homology sphere if and only if J(m,n)J(m,n) is fibered.

The conjecture extends the paper's results on twist knots and a second family of 2-bridge knots. The supplied text provides no resolution or partial proof of the general assertion.

Sources & referencesView supporting material

Primary source

Jim Hoste and Patrick D. Shanahan, “Commensurability classes of twist knots”, arXiv:math/0311051 (2004).

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