Combinatorial identity from a wild-to-tame character-variety correspondence

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Let μ∈Pn\mu\in\mathcal{P}_n, let μ′\mu' be the partition obtained by deleting the first part of μ\mu, and let n′=n−μ1n'=n-\mu_1. Set

μ′=((n′−1,1),…,(n′−1,1),μ′)∈Pn′n+1.{\bm \mu}'=((n'-1,1),\dots,(n'-1,1),\mu')\in\mathcal{P}_{n'}^{n+1}.

Assuming the notation and the wild-to-tame correspondence in the preceding discussion, wild-to-tame combinatorial conjecture.

H(μ,(1n)),1(z,w)=Hμ′(z,w).\mathbb{H}_{(\mu,(1^n)),1}(z,w)=\mathbb{H}_{{\bm \mu}'}(z,w).

This identity follows in the source from combining Boalch's isomorphism between the relevant wild and tame character varieties with the preceding mixed-Hodge-polynomial conjecture. It is therefore presented as a conjectural combinatorial consequence, rather than an independent theorem.

References

Primary source

Tamas Hausel, Martin Mereb and Michael Lennox Wong, “Arithmetic and representation theory of wild character varieties”, arXiv:1604.03382 (2016).

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