English
If h : HasFTaylorSeriesUpToOn n f p s and x ∈ s, then p x 0 equals the evaluation of f at x under the currying correspondence.
Русский
Если h : HasFTaylorSeriesUpToOn n f p s и x ∈ s, то p x 0 равно значению f x через корректное соответствие карриинга.
LaTeX
$$$HasFTaylorSeriesUpToOn\ n\ f\ p\ s \to {x} \in s\Rightarrow p x 0 = (\text{continuousMultilinearCurryFin0 } 𝕜 E F)^{-1} (f x)$$$
Lean4
theorem zero_eq' (h : HasFTaylorSeriesUpToOn n f p s) {x : E} (hx : x ∈ s) :
p x 0 = (continuousMultilinearCurryFin0 𝕜 E F).symm (f x) :=
by
rw [← h.zero_eq x hx]
exact (p x 0).uncurry0_curry0.symm