Theorems · Theorem
not_nontrivial_iff_subsingleton
∀ {α : Type u_1}, ¬Nontrivial α ↔ Subsingleton α- Defined in
- Mathlib.Logic.Nontrivial.Defs
- Cited by
- 23 results in Mathlib
- Foundations
- Depth 14 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites1
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Nontrivialstatement · cited by 2,416
Cited by23
Results whose statement or proof uses this declaration.
- subsingleton_or_nontrivialproof · cited by 161
- not_subsingleton_iff_nontrivialproof · cited by 21
- RingHom.codomain_trivialproof · cited by 7
- Finset.one_lt_card_iff_nontrivialproof · cited by 6
- Submodule.nontrivial_iff_ne_botproof · cited by 3
- Cardinal.one_lt_iff_nontrivialproof · cited by 3
- LieModule.nontrivial_lowerCentralSeriesLastproof · cited by 2
- Submodule.nontrivial_iffproof · cited by 2
- WithBot.denselyOrdered_set_iff_subsingletonproof · cited by 2
- IsSimpleAddGroup.prime_cardproof · cited by 2
- Module.notMem_support_iffproof · cited by 2
- subsingleton_of_disjoint_isClopenproof · cited by 2