Brownian continuum random tree limits of finite Fortuin–Kasteleyn maps above four

OpenAI

For each fixed q>4, critical finite Fortuin–Kasteleyn planar maps with n edges, distances scaled by a q-dependent constant times n⁻¹ᐟ², and normalized degree measure converge in distribution to the Brownian continuum random tree in Gromov–Hausdorff–Prokhorov topology.

Sources for this record

What was already known

An infinite-volume local limit was known, but the predicted compact finite-volume continuum-tree limit for q>4 remained open.

AI involvement AI-led

OpenAI credits an internal model with this manuscript and proof artifact. No human-origin central proof step is identified.

The OpenAI release credits an internal model with producing this family; specific independence from human mathematical direction is not documented.

Importance Major

Establishes the predicted finite-map tree limit in the q>4 regime, if the formalized model matches the intended maps.

Limitations

The result concerns finite q>4 maps after forgetting the root and FK decoration. It does not cover q≤4 or diffusion limits. No named human explanation of the convergence argument was found.

Technical verification Formal (Lean 4)

The Lean scope note specifies the q>4 finite-map law, scaling, normalized degree measure, GHP topology and all-size convergence. The OAI proof file contains the main theorem for that statement. This is source-reported machine verification, not a local rebuild; it does not certify other q-ranges or diffusion claims.

Formal checking

The source reports a Lean proof of the finite q>4 GHP limit.

Checker
OpenAI Lean formalization
Scope
Brownian CRT GHP distributional limit of critical finite FK maps for each fixed q>4
Basis
Reported by the linked checker
Evidence source

Checking a formal statement does not establish that it matches the original problem.

Human understanding Few

The released record does not document a named person explaining the central convergence argument. Few is the evidence default.

Correction and publication history