erdős #74
Let (possibly very slowly). Is there a graph of infinite chromatic number such that every finite subgraph on vertices can be made bipartite by deleting at most edges?
Worked, still open.
graph theory · open · prize $500 · formalized (Lean) · 0 attempts
machinery: graph-coloring,LP-layered-deletion,extremal-set-system
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vela registry pull vfr_37aec80d874a0239vela reproduce examples/erdos-problemsevidence
unverified AI candidates (2)
gpt-erdos · GPT-5.2 Pro + Deep Research · unverified
This is a well-known Erdős–Hajnal–Szemerédi problem, and in full generality it is **still open**. In particular, nobody knows whether you can do this for an *arbitrary* function (f(n)\to\infty) that grows very slowly. ([Erdős Problems][1])
candidate solution ↗llm-hunter · gpt 5.2, gpt pro 5.2 · unverified
2 LLM attack(s) recorded (gpt 5.2, gpt pro 5.2); unverified.
candidate solution ↗formal
AMS 5 · test (literature)
theorem SimpleGraph.edgeDistancesToBipartite_nonempty {G : SimpleGraph V} (A : G.Subgraph) :
SimpleGraph.edgeDistancesToBipartite A |>.Nonemptyformal-conjectures/74.lean ↗status
open