Theorems · Theorem · group theory
Subgroup.transferFocal_eq_pow
∀ {G : Type u_1} [inst : Group G] (H : Subgroup G) [inst_1 : H.FiniteIndex] (x : ↥H), H.transferFocal ↑x = ↑x ^ H.indexThe restriction of the transfer map to H acts like the power map x ↦ x^n mod H*,
where n = [G:H].
- Defined in
- Mathlib.GroupTheory.Focal
- Cited by
- 2 results in Mathlib
- Foundations
- Depth 107 from the axioms · uses propext, Classical.choice, Quot.sound
- Assumes
- GroupSubgroup.FiniteIndex
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites26
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- DFunLike.coestatement and proof · cited by 62,936
- Fintypeproof · cited by 7,736
- Groupstatement and proof · cited by 6,238
- MonoidHomstatement and proof · cited by 3,629
- Subgroupstatement and proof · cited by 3,593
- Finset.univproof · cited by 3,473
- Finset.prodproof · cited by 2,356
- HasQuotient.Quotientstatement and proof · cited by 2,301
- Finset.prod_congrproof · cited by 646
- Fintype.ofFiniteproof · cited by 255
- Subgroup.zpowersproof · cited by 204
- QuotientGroup.mkstatement and proof · cited by 196
Cited by2
Results whose statement or proof uses this declaration.
- Subgroup.ker_restrict_transferFocal_eq_focalSubgroupOfproof · cited by 1
- Subgroup.transferFocal_surjectiveproof · cited by 0