Neitzke–Yan compatibility conjecture for quantum UV–IR maps

Let Γ=H1(Σ~;Z)\Gamma=H_1(\widetilde{\Sigma};\mathbb{Z}) have its standard intersection pairing, and let

2Γ={2γγΓ},Γodd={γΓσ(γ)=γ},Γeven={γΓσ(γ)=γ},2\Gamma=\{2\gamma\mid\gamma\in\Gamma\},\qquad \Gamma^{\mathrm{odd}}=\{\gamma\in\Gamma\mid\sigma(\gamma)=-\gamma\},\qquad \Gamma^{\mathrm{even}}=\{\gamma\in\Gamma\mid\sigma(\gamma)=\gamma\},

where σ\sigma is the Z/2\mathbb{Z}/2-deck transformation action. Let Q2ΓQ_{2\Gamma}, QΓoddQ_{\Gamma^{\mathrm{odd}}}, and QΓevenQ_{\Gamma^{\mathrm{even}}} be the corresponding quantum tori, and let FτF_{\tau}, π\pi, ρ\rho, FoddF^{\mathrm{odd}}, and FevenF^{\mathrm{even}} be the maps specified in the diagram and formulas below. Neitzke–Yan compatibility conjecture. The diagram

\begin{tikzcd} \operatorname{SkAlg}^{\mathfrak{gl}_2,*}_{q}(\Sigma) \arrow[d, "\pi"] \arrow[r, "F_{\tau}"] & \operatorname{SkAlg}^{\mathfrak{gl}_1,*}_{q}(\widetilde{\Sigma}_{\tau}) \cong Q_{2\Gamma} \arrow[d, "\rho"]\\ \operatorname{SkAlg}^{\mathfrak{sl}_2}_{A}(\Sigma)\otimes\operatorname{SkAlg}^{\mathfrak{gl}_1,*}_{-A}(\Sigma) \arrow[r, "F^{\mathrm{odd}}\otimes F^{\mathrm{even}}"] & Q_{\Gamma^{\mathrm{odd}}}\otimes Q_{\Gamma^{\mathrm{even}}} \end{tikzcd}

is commutative, where

ρ(x2γ)=xγσ(γ)xγ+σ(γ),\rho(x_{2\gamma})=x_{\gamma-\sigma(\gamma)}\otimes x_{\gamma+\sigma(\gamma)}, Fodd([L]sl2)=(A)w(L)ρodd(ιF([L]gl2)),F^{\mathrm{odd}}([L]^{\mathfrak{sl}_2})=(-A)^{-w(\vec L)}\rho^{\mathrm{odd}}\bigl(\iota\circ F([\vec L]^{\mathfrak{gl}_2})\bigr),

with ρodd(x2γ)=xγσ(γ)\rho^{\mathrm{odd}}(x_{2\gamma})=x_{\gamma-\sigma(\gamma)}, and

Feven([L]gl1)=(A)w(L)xp1(L).F^{\mathrm{even}}([\vec L]^{\mathfrak{gl}_1})=(-A)^{w(\vec L)}x_{p^{-1}(\vec L)}.

Moreover, FoddF^{\mathrm{odd}} coincides with the Bonahon–Wong quantum trace map.

Sources & referencesView supporting material

Primary source

Samuel Panitch and Sunghyuk Park, “Compatibility of quantum trace and UV-IR maps”, arXiv:2509.09100 (2025).

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