Theorems · Theorem · group theory
AddSubgroup.relIndex_sup_left
∀ {G : Type u_1} [inst : AddGroup G] (H K : AddSubgroup G) [K.Normal], K.relIndex (K ⊔ H) = K.relIndex H- Defined in
- Mathlib.GroupTheory.Index
- Cited by
- 0 results in Mathlib
- Foundations
- Depth 95 from the axioms · uses propext, Classical.choice, Quot.sound
- Assumes
- AddGroupAddSubgroup.Normal
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Cites6
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- AddGroupstatement and proof · cited by 4,410
- AddSubgroupstatement and proof · cited by 3,232
- AddSubgroup.Normalstatement and proof · cited by 183
- sup_commproof · cited by 165
- AddSubgroup.relIndexstatement and proof · cited by 67
- AddSubgroup.relIndex_sup_rightproof · cited by 2
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