Theorems · Theorem · group theory
AddSubgroup.distribSMulToLinearMap_injective_of_isTorsionFree
∀ {M : Type u_1} [inst : AddCommGroup M] [Module.IsTorsionFree ℤ M] {n : ℕ},
n ≠ 0 → Function.Injective ⇑(DistribSMul.toLinearMap ℤ M n)On an additive group that is torsion-free as a ℤ-module, the linear map given by
multiplication by n : ℕ is injective (when n ≠ 0).
- Defined in
- Mathlib.GroupTheory.IndexNSmul
- Cited by
- 1 results in Mathlib
- Foundations
- Depth 69 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites10
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- DFunLike.coestatement · cited by 62,936
- RingHom.idstatement · cited by 18,349
- AddCommGroupstatement and proof · cited by 12,871
- LinearMapstatement · cited by 10,215
- LinearMap.kerproof · cited by 848
- Module.IsTorsionFreestatement and proof · cited by 600
- LinearMap.ker_eq_botproof · cited by 92
- DistribSMul.toLinearMapstatement and proof · cited by 50
- Submodule.eq_bot_iffproof · cited by 31
- DistribSMul.toLinearMap_applyproof · cited by 18
Cited by1
Results whose statement or proof uses this declaration.
- AddSubgroup.finrank_eq_of_finiteIndexproof · cited by 1