The best Ulam constant of the n-th order linear differential operator with constant coefficients

Jawad Boutarfass, Iz-iddine EL-Fassi, Lahcen Oukhtite

Let $X$ be a Banach space over the field $\mathbb{K}\in \{\mathbb{R},\mathbb{C}\}$, and let $L:{\mathcal{C}}^n(\mathbb{R},X)\to \mathcal{C}(\mathbb{R},X)$ be the $n$-th order line…