Christine Pfeuffer

collaborators

2 papers

math.FA2026

Compactness for pseudo-differential and Toeplitz operators on modulation spaces

Elmira Nabizadeh-Morsalfard, Christine Pfeuffer, Nenad Teofanov +1

We deduce various norm equivalences, and convolution estimates for the modulation space $M_{(I ¨ )}^{♯, q}$ consisting of all $f \in M_{(I ¨ )}^{\infty, q}$ such that $|V_Ïf \cdot…

math.FA2025

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

Joachim Toft, Christine Pfeuffer, Nenad Teofanov

Let $B$ be a normal quasi-Banach function space with respect to $r_{0} \in (0, 1]$ and $v_{0}$ , $I ¨ $ be $v$ -moderate, and let $r \in [r_{0}, \infty]$ . Then we prove that $f$ belon…