Parameter identification conjecture for high-genus triangulation limits

Let Tn,g\mathcal{T}_{n,g} be the set of rooted triangulations of genus gg with nn vertices, and let Tn,gT_{n,g} be uniformly distributed in Tn,g\mathcal{T}_{n,g}. For κ(0,227]\kappa\in(0,\frac{2}{27}], define

f(κ)=E[(degree of the origin in Tκ)1].f(\kappa)=E\left[\left(\operatorname{degree\ of\ the\ origin\ in\ }\mathbf{T}_{\kappa}\right)^{-1}\right].

For θ0\theta\geq0, let κ(0,227]\kappa\in(0,\frac{2}{27}] satisfy f(κ)=(6(1+2θ))1f(\kappa)=(6(1+2\theta))^{-1}. Parameter identification conjecture.

Tn,[θn]n(d)Tκ.T_{n,[\theta n]}\xrightarrow[n\to\infty]{(d)}\mathbf{T}_{\kappa}.

This sharpens the introductory conjecture by matching the finite and infinite models through the inverse degree of the root; the required strict monotonicity and the resulting convergence are not proved in the paper.

Sources & referencesView supporting material

Primary source

Nicolas Curien, “Planar stochastic hyperbolic infinite triangulations”, arXiv:1401.3297 (2014).

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