convert disjoint_filter_filter_neg (range (t + 1)) (range (t + 1)) fun i => P i = minP t P
t : ℕ
P : ℕ → ℕ
h : Balanced t P
⊢ Disjoint (smallParts h) (largeParts h)
case h.e'_5
t : ℕ
P : ℕ → ℕ
h : Balanced t P
⊢ largeParts h = filter (fun a => ¬P a = minP t P) (range (t + 1))