Erdős Problem 100

9-Point Planar Configuration Bounds

The model extracted the exact algebraic Cartesian coordinates for Lothar Piepmeyer's 9-point planar configuration using the algebraic seed constant x = (1+√2)√(2-√3) and formally verified the DistancesSeparated bounds over all 9 points.

To avoid ring and norm_num timeouts over the highly nested radicals, the model autonomously constructed a custom Term Rewriting System mapping the Euclidean distances to a finite set.

View PR #2421 → View Original Proof PR #2406 →
Gemini 3.1 Pro
Model (Aletheia Harness)
2,020
Lines of Lean 4
Merged
DeepMind Repository
Gemini 3.1 Pro
Model
4
Lines of Lean 4
Merged
DeepMind Repository
Erdős Problem 307

Coprime Sums of Reciprocals

Resolves the erdos_307_coprime undergraduate variant. The proof formally verifies the known configuration sets {1, 5} and {2, 3}.

The model demonstrated that the product of the sums of their reciprocals is exactly 1, satisfying all pairwise coprime and disjoint constraints of the problem statement.

View PR #2420 →
Green's Problem 24

max013AffineTranslates n ≤ n²

The model proved the trivial upper bound for Green's Open Problem 24. The failure-and-correction trajectory demonstrated reasoning under compiler feedback, not memorization.

In previous attempts, the model hallucinated Nat.sSup_le, then corrected to sSup_le (wrong type class), and finally verified using csSup_le (conditional supremum) and constructed the correct nonemptiness witness.

View PR #2358 →
Gemini 3 Flash
Model
12
Lines of Lean 4
Merged
DeepMind Repository

V2 Zero-Trust Pipeline

Migrated to Lean's official Comparator. No agent self-reports are trusted.

1
Banned Token Scan 19 tokens + NFKC Unicode normalization
2
Sandboxed Execution systemd-run isolates the build
3
Comparator Build Builds ground-truth challenge
4
Agent Build Builds agent's proposed solution
5
Kernel Replay Evaluates low-level Lean exports
6
Exact Signature Match Cryptographically ensures no redefinition
7
Axiom Audit Rejects sorryAx and unauthorized axioms

How It Works

You don't need to trust us. The Lean 4 kernel is the arbiter.

When lake lean exits with code 0 and #print axioms shows only standard axioms (propext, Classical.choice, Quot.sound), the proof is mechanically verified.

No human judgment required.
AI model leaderboard for formal mathematics proof verification
Model Evaluation

Leaderboard

See how models perform across all 300 unsolved conjectures.

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Browse 300 unsolved mathematical conjectures
300 Conjectures

Browse Problems

Erdos, Millennium, Green, OEIS, and more. No human has proved them.

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