Polynomial growth conjecture for the length-ratio invariant

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Let Sg,mS_{g,m} be a surface and let ρ∈Pos⁡3h(Sg,m)\rho\in\operatorname{Pos}_3^h(S_{g,m}) have canonical area at most tt. For every non-trivial, non-peripheral γ∈π1(Sg,m)\gamma\in\pi_1(S_{g,m}), let ℓ1ρ(γ)\ell_1^\rho(\gamma) and ℓ2ρ(γ)\ell_2^\rho(\gamma) be the associated length invariants. There is a constant L(t)L(t), independent of ρ\rho, such that

ℓ2ρ(γ)ℓ1ρ(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 ℓ2ρ(γ)/ℓ1ρ(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.

References

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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