∀ {ι : Type u_1} {α : Type u_2} {β : Type u_3} [inst : AddCommMonoid α] [inst_1 : PartialOrder α]
  [inst_2 : AddCommMonoid β] [inst_3 : PartialOrder β] [inst_4 : SMulZeroClass α β] [inst_5 : FloorDiv α β] {f : ι →₀ β}
  {a : α}, (f ⌊/⌋ a).support ⊆ f.support