Theorems · Theorem · group theory
Subgroup.comap_sup_comap_le
∀ {G : Type u_1} [inst : Group G] {N : Type u_5} [inst_1 : Group N] (H K : Subgroup N) (f : G →* N),
Subgroup.comap f H ⊔ Subgroup.comap f K ≤ Subgroup.comap f (H ⊔ K)- Defined in
- Mathlib.Algebra.Group.Subgroup.Map
- Cited by
- 0 results in Mathlib
- Foundations
- Depth 69 from the axioms · uses propext, Classical.choice, Quot.sound
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Cites6
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Groupstatement and proof · cited by 6,238
- MonoidHomstatement and proof · cited by 3,629
- Subgroupstatement and proof · cited by 3,593
- Subgroup.comapstatement · cited by 154
- Monotone.le_map_supproof · cited by 11
- Subgroup.comap_monoproof · cited by 11
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