Let A^q_s(T) denote the space of all Lebesgue integrable functions on the torus T such that their Fourier coefficients belong to the weighted sequence spaces l^q_s(Z). We consider necessary and sufficient conditions for all functions F in A^1_β(T) to operate on all real-valued functions in A^q_s(T).
This talk is based on a joint work with Enji Sato (Yamagata Univ.).
https://univienna.zoom.us/j/62077153839?pwd=T3pxeHNRNEU0RlFoY1J2cnIzbzU5dz09