An analytic function \(f\colon U\subset \mathbb{R}\to \mathbb{R}\) is called real analytic, where \(U\subset \mathbb{R}\) is open.
The set of real analytic function on \(U\) is often denoted by \(C^\omega(U)\).
An analytic function \(f\colon U\subset \mathbb{R}\to \mathbb{R}\) is called real analytic, where \(U\subset \mathbb{R}\) is open.
The set of real analytic function on \(U\) is often denoted by \(C^\omega(U)\).