2 papers
math.FA2005
Minimal Norm Interpolation in Harmonic Hilbert Spaces and Wiener Amalgam Spaces on Locally Compact Abelian Groups
Hans G. Feichtinger, Sheel S. Pandey, Tobias Werther
The family of harmonic Hilbert spaces is a natural enlargement of those classical -Sobolev space on which consist of continuous functions. In the present paper we dem…
math.FA2002
Compactness Criteria in Function Spaces
Monika Dörfler, Hans G. Feichtinger, Karlheinz Gröchenig
The classical criterion for compactness in Banach spaces of functions can be reformulated into a simple tightness condition in the time-frequency domain. This description preserves…