English
A function f is continuously polynomial on a set s if it is continuously polynomial at every point of s.
Русский
Функция f непрерывно многочлена на множестве s, если она является непрерывно многочленной в каждой точке из s.
LaTeX
$$CPolynomialOn 𝕜 f s := ∀ x, x ∈ s → CPolynomialAt 𝕜 f x$$
Lean4
/-- Given a function `f : E → F`, we say that `f` is continuously polynomial on a set `s`
if it is continuously polynomial around every point of `s`. -/
def CPolynomialOn (f : E → F) (s : Set E) :=
∀ x, x ∈ s → CPolynomialAt 𝕜 f x