Theorems · Theorem · commutative algebra
IsLocalRing.of_nonunits_add
∀ {R : Type u_1} [inst : Semiring R] [Nontrivial R],
(∀ (a b : R), a ∈ nonunits R → b ∈ nonunits R → a + b ∈ nonunits R) → IsLocalRing RA semiring is local if it is nontrivial and the set of nonunits is closed under the addition.
- Defined in
- Mathlib.RingTheory.LocalRing.Basic
- Cited by
- 2 results in Mathlib
- Foundations
- Depth 13 from the axioms · uses propext, Classical.choice, Quot.sound
- Assumes
- SemiringNontrivial
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites8
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Setstatement · cited by 53,352
- Semiringstatement and proof · cited by 13,802
- Nontrivialstatement and proof · cited by 2,416
- IsUnitproof · cited by 1,602
- IsLocalRingstatement · cited by 339
- isUnit_oneproof · cited by 48
- nonunitsstatement and proof · cited by 35
- or_iff_not_and_notproof · cited by 4
Cited by2
Results whose statement or proof uses this declaration.
- IsLocalization.AtPrime.isLocalRingproof · cited by 19
- IsLocalRing.of_unique_max_idealproof · cited by 4