English
For any x in the scalar field, there exists a basis neighborhood V of 0 and a basis subset W such that x•W ⊆ U, expressing consistency of scalar action with the basis.
Русский
Для любого x существует окрестность V нуля и базовый элемент W так, что x•W ⊆ U.
LaTeX
$$∃ V ∈ 𝓝(0_R), ∃ W ∈ p.addGroupFilterBasis.sets, x•W ⊆ U$$
Lean4
/-- The `moduleFilterBasis` induced by the filter basis `Seminorm.basisSets`. -/
protected def moduleFilterBasis : ModuleFilterBasis 𝕜 F
where
toAddGroupFilterBasis := p.addGroupFilterBasis
smul' := p.basisSets_smul _
smul_left' := p.basisSets_smul_left
smul_right' := p.basisSets_smul_right