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theorem proved term proof

fib_6_eq

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formal statement (Lean)

  38theorem fib_6_eq : fib 6 = 8 := by native_decide

proof body

Term-mode proof.

  39
  40/-! ## The Fibonacci Identity -/
  41
  42/-- The Fibonacci recurrence: F₆ = F₅ + F₄ -/

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