Theorems · Theorem · general topology
totallyDisconnectedSpace_iff_connectedComponent_singleton
∀ {α : Type u} [inst : TopologicalSpace α], TotallyDisconnectedSpace α ↔ ∀ (x : α), connectedComponent x = {x}A space is totally disconnected iff its connected components are singletons.
- Cited by
- 4 results in Mathlib
- Foundations
- Depth 64 from the axioms · uses propext, Classical.choice, Quot.sound
- Assumes
- TopologicalSpace
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites7
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Setstatement · cited by 53,352
- TopologicalSpacestatement and proof · cited by 24,529
- TotallyDisconnectedSpacestatement · cited by 295
- connectedComponentstatement and proof · cited by 68
- mem_connectedComponentproof · cited by 21
- Set.subsingleton_iff_singletonproof · cited by 11
- totallyDisconnectedSpace_iff_connectedComponent_subsingletonproof · cited by 1
Cited by4
Results whose statement or proof uses this declaration.
- connectedComponent_eq_singletonproof · cited by 4
- nhds_basis_clopenproof · cited by 3
- totallyDisconnectedSpace_iff_connectedComponent_zeroproof · cited by 0
- totallyDisconnectedSpace_iff_connectedComponent_oneproof · cited by 0