Norm estimates for a broad class of modulation spaces, and continuity of Fourier type operators

Joachim Toft, Christine Pfeuffer, Nenad Teofanov

Let $\mathcal{B}$ be a normal quasi-Banach function space with respect to $r_0\in (0,1]$ and $v_0$, $\omega$ be $v$-moderate, and let $r\in [r_0,\infty ]$. Then we prove that $f$ belong…