Connectivity conjecture for the infinite Schaeffer forest

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Let QQ be the infinite random quadrangulation, and let Sch∞(Q){\rm Sch}_\infty(Q) be the spanning forest obtained by applying the Schaeffer construction to the increments of the Busemann function hh defined by

Δh(x,y)=lim⁡z→∞d(x,z)−d(y,z)=h(x)−h(y).\Delta h(x,y)=\lim_{z\to\infty}d(x,z)-d(y,z)=h(x)-h(y).

Connectivity conjecture. The graph Sch∞(Q){\rm Sch}_\infty(Q) is connected almost surely.

This conjecture interprets the forest seen from infinity as a single limiting Schaeffer tree. The supplied text gives no resolution, so its status remains open.

References

Primary source

Maxim Krikun, “On one property of distances in the infinite random quadrangulation”, arXiv:0805.1907 (2008).

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