Theorems · Definition · group theory
QuotientAddGroup.quotientKerEquivRange
{G : Type u} → [inst : AddGroup G] → {H : Type v} → [inst_1 : AddGroup H] → (φ : G →+ H) → G ⧸ φ.ker ≃+ ↥φ.rangeThe first isomorphism theorem (a definition): the canonical isomorphism between
G/(ker φ) to range φ.
- Defined in
- Mathlib.GroupTheory.QuotientGroup.Basic
- Cited by
- 4 results in Mathlib
- Foundations
- Depth 82 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites9
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 · cited by 3,232
- AddMonoidHomstatement and proof · cited by 3,230
- HasQuotient.Quotientstatement · cited by 2,301
- AddEquivstatement · cited by 1,087
- AddMonoidHom.kerstatement · cited by 158
- AddMonoidHom.rangestatement · cited by 142
- AddEquiv.ofBijectiveproof · cited by 5
- QuotientAddGroup.rangeKerLiftproof · cited by 2
Cited by5
Results whose statement or proof uses this declaration.
- AddMonoidHom.finite_iff_finite_ker_rangeproof · cited by 1
- CategoryTheory.ShortComplex.Exact.ab_finiteproof · cited by 1
- ContinuousAddEquiv.quotientKerEquivRangeproof · cited by 0
- AddMonoidHom.isStrictMap_iff_isHomeomorph_quotientKerEquivRangestatement and proof · cited by 0
- AddMonoidHom.surjective_of_card_ker_le_divproof · cited by 0