Theorems · Theorem · commutative algebra
IsAddRightRegular.add
∀ {R : Type u_1} [inst : AddSemigroup R] {a b : R},
IsAddRightRegular a → IsAddRightRegular b → IsAddRightRegular (a + b)In an additive semigroup, the sum of add-right-regular elements is add-right-regular.
- Defined in
- Mathlib.Algebra.Regular.Basic
- Cited by
- 2 results in Mathlib
- Foundations
- Depth 7 from the axioms · uses propext, Quot.sound
- Assumes
- AddSemigroup
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites3
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- AddSemigroupstatement and proof · cited by 136
- IsAddRightRegularstatement and proof · cited by 55
- comp_add_rightproof · cited by 4
Cited by2
Results whose statement or proof uses this declaration.
- IsAddRegular.addproof · cited by 1
- add_isAddRightRegular_iffproof · cited by 0