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theorem proved term proof

complexityClassCount

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formal statement (Lean)

  39theorem complexityClassCount : Fintype.card ComplexityClass = 5 := by decide

proof body

Term-mode proof.

  40
  41/-- P ⊆ NP (structural). -/
  42-- Note: proving P ≠ NP requires Clay-level work, not doable here.
  43-- We just formalise the structural 5-class taxonomy.
  44

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