Theorem TopologicalSpace.Closeds.mem_singleton

Modification history

2025-11-25 09:05
Mathlib/Topology/Sets/Closeds.lean
chore(Topology/Sets/Closeds): add `Singleton` instance to enable `{·}` notation (#32020)
Modified TopologicalSpace.Closeds.mem_singletonView on Github →
2023-12-09 13:26
Mathlib/Topology/Sets/Closeds.lean
feat: Finsets and multisets are graded (#8892) …
Added TopologicalSpace.Closeds.mem_singletonView on Github →