exact absurd h2.eq_imp_1 (Nat.ne_of_gt h4)
case inr.inl
N n m : ℕ
h1 : ∀ m_1 < m, ∀ (m : ℕ), NatPredicate N m m_1 → ∃ k, m = k.fib ∧ m_1 = (k + 1).fib
h2 : NatPredicate N m m
h3 : m ≤ m
h4 : 1 < m
⊢ ∃ k, m = k.fib ∧ m = (k + 1).fib
no goals