A $3,000 graph-theory bounty is now formalized in Lean and open for counterexamples

MarioKrenn6240 · x · 2026-07-23

A repost points to a graph-theory conjecture with a $3,000 bounty and a Lean formalization, inviting people to use a prompt to search for a counterexample.

The quoted context says the Dinitz-Garg-Goemans conjecture was recently shown false via a graph found with GPT-5.6 Pro, where a graph with fractional flow cost 58 forced any unsplittable flow under a capacity violation of 15 to cost at least 60.

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