Theorems · Theorem · general topology
nhdsKer_union
∀ {X : Type u_2} [inst : TopologicalSpace X] (s t : Set X), nhdsKer (s ∪ t) = nhdsKer s ∪ nhdsKer t- Defined in
- Mathlib.Topology.NhdsKer
- Cited by
- 0 results in Mathlib
- Foundations
- Depth 69 from the axioms · uses propext, Classical.choice, Quot.sound
- Assumes
- TopologicalSpace
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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
- nhdsSetproof · cited by 267
- nhdsKerstatement · cited by 53
- Filter.kerproof · cited by 40
- nhdsSet_unionproof · cited by 8
- Filter.ker_supproof · cited by 2
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