AddSubgroup.addSubgroupOf_sup

∀ {G : Type u_1} [inst : AddGroup G] {A A' B : AddSubgroup G},
  A ≤ B → A' ≤ B → (A ⊔ A').addSubgroupOf B = A.addSubgroupOf B ⊔ A'.addSubgroupOf B

Defined in: Mathlib.Algebra.Group.Subgroup.Ker
Cited by: 1 results in Mathlib
Foundations: Depth 73 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: AddGroup

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