Theorems · Theorem · general topology
nhdsSet_diagonal_eq_uniformity
∀ {α : Type ua} [inst : UniformSpace α] [CompactSpace α], nhdsSet (Set.diagonal α) = uniformity αOn a compact uniform space, the topology determines the uniform structure, entourages are exactly the neighborhoods of the diagonal.
- Defined in
- Mathlib.Topology.UniformSpace.Compact
- Cited by
- 2 results in Mathlib
- Foundations
- Depth 83 from the axioms · uses propext, Classical.choice, Quot.sound
- Assumes
- UniformSpaceCompactSpace
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites24
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Setproof · cited by 53,352
- Filterstatement and proof · cited by 8,121
- Set.preimageproof · cited by 4,946
- Set.iUnionproof · cited by 2,483
- UniformSpacestatement and proof · cited by 2,040
- SProd.sprodproof · cited by 1,750
- uniformitystatement and proof · cited by 765
- Filter.HasBasisproof · cited by 604
- CompactSpacestatement and proof · cited by 593
- LE.le.antisymmproof · cited by 507
- Filter.mem_of_supersetproof · cited by 308
- nhdsSetstatement · cited by 267
Cited by2
Results whose statement or proof uses this declaration.
- CompactSpace.uniformContinuous_of_continuousproof · cited by 5
- compactSpace_uniformityproof · cited by 1