English
Analytic manifolds are smooth manifolds; the analytic structure implies a compatible smooth structure.
Русский
Аналитические многообразия являются гладкими многообразиями; аналитическая структура совместима со гладкой структурой.
LaTeX
$$IsManifold I ∞ M, if M has ChartedSpace structure with analytic atlas, then M is a smooth manifold with the induced structure.$$
Lean4
/-- Analytic manifolds are smooth manifolds. -/
instance isManifold [ChartedSpace H M] [cm : AnalyticManifold I M] : IsManifold I ∞ M where
compatible hf
hg :=
⟨(cm.compatible hf hg).1.contDiffOn I.uniqueDiffOn_preimage_source,
(cm.compatible hg hf).1.contDiffOn I.uniqueDiffOn_preimage_source⟩