Theorems · Theorem · general topology
isCountablyCompact_iff_countablyCompactSpace
∀ {E : Type u_2} [inst : TopologicalSpace E] {A : Set E}, IsCountablyCompact A ↔ CountablyCompactSpace ↑A- Cited by
- 1 results in Mathlib
- Foundations
- Depth 80 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 and proof · cited by 53,352
- TopologicalSpacestatement and proof · cited by 24,529
- Set.Elemstatement · cited by 7,166
- IsCountablyCompactstatement · cited by 33
- CountablyCompactSpacestatement · cited by 7
- isCountablyCompact_iff_isCountablyCompact_univproof · cited by 1
- isCountablyCompact_univ_iffproof · cited by 1
Cited by1
Results whose statement or proof uses this declaration.
- IsCountablyCompact.isSeqCompactproof · cited by 1