intro i hi
m : ℕ → ℕ+
k : ℕ
nm : ℕ+
⊢ ∀ i ∈ Finset.range k, 1 + 1 / ↑↑(if i < k then m i else nm) = 1 + 1 / ↑↑(m i)
m : ℕ → ℕ+
k : ℕ
nm : ℕ+
i : ℕ
hi : i ∈ Finset.range k
⊢ 1 + 1 / ↑↑(if i < k then m i else nm) = 1 + 1 / ↑↑(m i)