Multiplication properties in pseudo-differential calculus with small regularity on the symbols


DOI: 10.1007/s11868-010-0007-0

Cite this article as:
Toft, J. J. Pseudo-Differ. Oper. Appl. (2010) 1: 101. doi:10.1007/s11868-010-0007-0


We consider modulation space and spaces of Schatten–von Neumann symbols where corresponding pseudo-differential operators map one Hilbert space to another. We prove Hölder–Young and Young type results for such spaces under dilated convolutions and multiplications. We also prove continuity properties for such spaces under the twisted convolution, and the Weyl product. These results lead to continuity properties for twisted convolutions on Lebesgue spaces, e.g. \({L^p_{(\omega )}}\) is a twisted convolution algebra when 1 ≤ p ≤ 2 and ω is an appropriate weight.


TwistedConvolutionWeyl productSchatten–von NeumannModulationToeplitz

Mathematics Subject Classification (2000)

Primary 35S0547B1047B3744A35Secondary 42B3543A1547B35

Copyright information

© Birkhäuser / Springer Basel AG 2010

Authors and Affiliations

  1. 1.Department of Mathematics and Systems EngineeringVäxjö UniversityVäxjöSweden