Theorem exists_dual_vector

Modification history

2026-02-10 23:11
Mathlib/Analysis/Normed/Module/HahnBanach.lean
feat(Analysis/Normed/Module/{HahnBanach, Dual}): Weaken [NormedAddCommGroup] to seminormed (#34585) …
Modified exists_dual_vectorView on Github →
2025-08-22 20:24
Mathlib/Analysis/NormedSpace/HahnBanach/Extension.lean
refactor: Use `StrongDual` (#28726) …
Modified exists_dual_vectorView on Github →
2023-05-24 09:36
Mathlib/Analysis/NormedSpace/HahnBanach/Extension.lean
feat: port Analysis.NormedSpace.HahnBanach.Extension (#4268)
Added exists_dual_vectorView on Github →