unfold Moveable at hM
α : Type u_1
inst✝¹ : Fintype α
inst✝ : DecidableEq α
M : MultiPart α
hM : ¬Moveable M
⊢ Bal M.t (card M.A) fun i => card (MultiPart.P M i)
α : Type u_1
inst✝¹ : Fintype α
inst✝ : DecidableEq α
M : MultiPart α
hM : ¬¬Balanced M.t fun i => card (MultiPart.P M i)
⊢ Bal M.t (card M.A) fun i => card (MultiPart.P M i)