English
Construct a continuous complex-linear map from a continuous real-linear map that maps i to i · ℓ(1).
Русский
Построение непрерывной комплексно-линейной карты из непрерывной вещественно-линейной карты, которая распознаёт i как i · ℓ(1).
LaTeX
$$$\text{complexOfReal}(\ell, h) : \mathbb{C} \to_L^\mathbb{C} E$ and is continuous$$
Lean4
/-- Construct a continuous complex-linear map from a continuous real-linear map `ℓ` that maps `I` to
`I • ℓ 1`.
-/
def complexOfReal (ℓ : ℂ →L[ℝ] E) (h : ℓ I = I • ℓ 1) : ℂ →L[ℂ] E
where
__ := ℓ
map_smul' := real_linearMap_map_smul_complex h