Positivity conjecture for colored unknot invariants in real projective three-space

Let UU be an unknot in RP3\mathbb{R}P^3 colored by an nn-dimensional skew-symmetric or symmetric representation RR of su(2)su(2). Let ZR(U;Q,q)Z_{R\emptyset}(U;Q,q) be its invariant, and let SS denote the qq-series expansion. Positivity conjecture. For every order in QQ, the expansion satisfies

S[ZR(U;Q,q)]Z+[[q]].S[Z_{R\emptyset}(U;Q,q)]\in\mathbb{Z}_{+}[[q]].

This conjecture proposes integrality and positivity of the coefficients observed in the computed examples. The supplied text does not state a resolution status.

Sources & referencesView supporting material

Primary source

John Chae, “Link in RP^3 and the Topological Vertex”, arXiv:2501.12566 (2025).

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