Sobolev Spaces of Fractional Order, Lipschitz Spaces, Readapted Modulation Spaces and Their Interrelations; Applications

Paul L. Butzer, Gerhard Schmeisser, Rudolf L. Stens

The purpose of this investigation is to extend basic equations and inequalities which hold for functions $f$ in a Bernstein space $B_{\sigma }^2$ to larger spaces by adding a remainder ter…