Polynomial growth conjecture for the length-ratio invariant

Let Sg,mS_{g,m} be a surface and let ρPos3h(Sg,m)\rho\in\operatorname{Pos}_3^h(S_{g,m}) have canonical area at most tt. For every non-trivial, non-peripheral γπ1(Sg,m)\gamma\in\pi_1(S_{g,m}), let 1ρ(γ)\ell_1^\rho(\gamma) and 2ρ(γ)\ell_2^\rho(\gamma) be the associated length invariants. There is a constant L(t)L(t), independent of ρ\rho, such that

2ρ(γ)1ρ(γ)L(t).\frac{\ell_2^\rho(\gamma)}{\ell_1^\rho(\gamma)}\leq L(t).

Polynomial growth conjecture. The constant L(t)L(t) above can be a polynomial of tt.

This conjecture asks for a quantitative polynomial version of the established uniform boundedness of the ratio 2ρ(γ)/1ρ(γ)\ell_2^\rho(\gamma)/\ell_1^\rho(\gamma) for bounded-area positive convex structures. The supplied text does not indicate whether it has been resolved.

Sources & referencesView supporting material

Primary source

Zhe Sun, “Volume of the moduli space of unmarked bounded positive convex RP^2 structures”, arXiv:2001.01295 (2020).

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