Set.singleton_sub_singleton

∀ {α : Type u_2} [inst : Sub α] {a b : α}, {a} - {b} = {a - b}

Defined in: Mathlib.Algebra.Group.Pointwise.Set.Basic
Cited by: 1 results in Mathlib
Foundations: Depth 18 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Sub

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