English
The constant formal multilinear series with c does not exist unless c is zero; equivalently, it is identically zero when c = 0.
Русский
Константная формальная серия равна нулю, если c = 0; иначе она имеет нулевые higher-degree_term.
LaTeX
$$$ constFormalMultilinearSeries 𝕜 E 0 = 0 $$$
Lean4
@[simp]
theorem constFormalMultilinearSeries_zero [NontriviallyNormedField 𝕜] [NormedAddCommGroup E] [NormedAddCommGroup F]
[NormedSpace 𝕜 E] [NormedSpace 𝕜 F] : constFormalMultilinearSeries 𝕜 E (0 : F) = 0 :=
by
ext n x
simp only [FormalMultilinearSeries.zero_apply, ContinuousMultilinearMap.zero_apply, constFormalMultilinearSeries]
induction n
· simp only [ContinuousMultilinearMap.uncurry0_apply]
· simp only [constFormalMultilinearSeries.match_1.eq_2, ContinuousMultilinearMap.zero_apply]