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Finite Mod_{g,n}-orbits correspond to finite image for large genus

Determine whether, for genus g sufficiently large relative to rank r, a conjugacy class of representations of π1(Σ_{g,n}) has a finite orbit under Mod_{g,n} if and only if its image is finite.

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Background

This conjecture posits a clean characterization of finite orbits on character varieties in the high-genus regime. It asserts that finite Mod_{g,n}-orbits should coincide with representations having finite image. The paper later proves this when g≥r2, giving significant evidence for the conjecture.

References

Conjecture [Kisin {[p.~3]{biswas-whang}, p.~1, Whang {[Question 1.5.3]{lawrence2022representations}] For g\gg r, the finite \on{Mod}{g,n}-orbits in Y(g,n,r) correspond exactly to those representations \pi_1(\Sigma{g,n})\to \on{GL}_r(\mathbb{C}) with finite image.

Motives, mapping class groups, and monodromy (2409.02234 - Litt, 3 Sep 2024) in Conjecture (Kisin; Whang), Section 2