The CHSH rigidity theorem is machine-checked in Lean 4, confirming near-optimal strategies are locally isometric to the qubit strategy while exposing a gap in prior reasoning.
Consequences and lim- its of nonlocal strategies
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Formalizing CHSH Rigidity in Lean 4
The CHSH rigidity theorem is machine-checked in Lean 4, confirming near-optimal strategies are locally isometric to the qubit strategy while exposing a gap in prior reasoning.