exact trans (r:=LT.lt (α:=Nat)) (s:=Eq) hi (as.size_shrink h)
α : Type u
as : Array α
n : Nat
h : n ≤ size as
this : ∀ (i k : Nat) (hk : k ≤ size as) (hi : i < size as - k), (shrink.loop k as)[i] = as[i]
i : Nat
hi : i < size (shrink.loop (size as - n) as)
⊢ i < n
no goals