English
The base set of the product continuousLinearMap equals the intersection of the base sets and the example demonstrates the end-to-end continuity of the coordinate changes on the atlas.
Русский
База множества произведённого continuousLinearMap равна пересечению базовых множеств и пример демонстрирует непрерывность координатного изменения в атласе.
LaTeX
$$$ (e_1.continuousLinearMap σ e_2).baseSet = e_1.baseSet \\cap e_2.baseSet $$$
Lean4
theorem continuousLinearMap_apply (p : TotalSpace (F₁ →SL[σ] F₂) (fun x ↦ E₁ x →SL[σ] E₂ x)) :
e₁.continuousLinearMap σ e₂ p =
⟨p.1,
(e₂.continuousLinearMapAt 𝕜₂ p.1 : _ →L[𝕜₂] _).comp
(p.2.comp (e₁.symmL 𝕜₁ p.1 : F₁ →L[𝕜₁] E₁ p.1) : F₁ →SL[σ] E₂ p.1)⟩ :=
rfl