Tropical disk counting reconstruction conjecture for wall structures

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Let σ∈Pmax⁡\sigma\in\mathscr{P}_{\operatorname{max}}, let v∈σv\in\sigma, and let Pv,σP_{v,\sigma} be the monoid determined by the multivalued piecewise linear function φ\varphi. For k∈Nk\in\mathbb{N}, define the counting function by

log⁡fσ,x:=∑m‾∈Λx,B,ℓ≤k∑wlength⁡(m‾)#M0(w,m‾,ℓ)gen⁡zm‾tℓ∏τtτ∣wτ∣\log f_{\sigma,x}:=\sum_{\substack{\overline m\in\Lambda_{x,B},\\ \ell\leq k}}\sum_{\mathbf w}\operatorname{length}(\overline m)\#\mathcal M_0(\mathbf w,\overline m,\ell)^{\operatorname{gen}}z^{\overline m}t^\ell\prod_\tau t_\tau^{|w_\tau|}

in k[Pv,σ]⊗kRk\Bbbk[P_{v,\sigma}]\otimes_\Bbbk R^k. After reduction modulo (tk+1)(t^{k+1}), suppose this counting polynomial stabilizes in w\mathbf w and maps to Rg,σkR_{g,\sigma}^k by tτ↦1t_\tau\mapsto1. Define

pk[x]:={y∈σ∖∂σ∣log⁡fσ,y=log⁡fσ,x≠0∈Rg,σk}‾.\mathfrak{p}^k[x]:=\overline{\left\{y\in\sigma\setminus\partial\sigma\mid \log f_{\sigma,y}=\log f_{\sigma,x}\neq0\in R_{g,\sigma}^k\right\}}.

Tropical disk counting reconstruction conjecture. For every k∈Nk\in\mathbb N, the sets pk[x]\mathfrak{p}^k[x] are either empty or polyhedral subsets of codimension at least one, and, up to refinement and addition of trivial walls, the sets pk[x]\mathfrak{p}^k[x] with their functions log⁡fσ,y\log f_{\sigma,y} reproduce the consistent wall structure Sk\mathscr{S}_k constructed in the cited algorithm. This conjecture identifies the consistent wall structure with loci on which the tropical disk-counting functions are constant.

References

Primary source

Michael Carl, Max Pumperla and Bernd Siebert, “A tropical view on Landau-Ginzburg models”, arXiv:2205.07753 (2024).

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