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theorem proved term proof

fibonacci_char_poly_root

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formal statement (Lean)

  51theorem fibonacci_char_poly_root : fibonacci_char_poly phi = 0 := by

proof body

Term-mode proof.

  52  unfold fibonacci_char_poly; linarith [phi_sq_eq]
  53
  54/-- φ is the unique positive root of the Fibonacci characteristic polynomial. -/

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depends on (12)

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