Theorem Valued.isOpen_sphere

Modification history

2026-03-06 13:45
Mathlib/Topology/Algebra/Valued/ValuationTopology.lean
chore(RingTheory/Valuation/RankOne): modify the definition of Valuation.RankOne using its range rather than its codomain (#26872) …
Modified Valued.isOpen_sphereView on Github →
2025-05-04 06:34
Mathlib/Topology/Algebra/Valued/ValuationTopology.lean
feat(Topology/Algebra/Valued): Add `IsClosed` and `IsClopen` lemmas (#24353) …
Modified Valued.isOpen_sphereView on Github →
2025-04-02 23:37
Mathlib/Topology/Algebra/Valued/ValuationTopology.lean
feat(Topology/Algebra/Valued/LocallyCompact): locally compact nonarchimedean field iff complete and DVR and finite field (#16733)
Added Valued.isOpen_sphereView on Github →