%0 Journal Article
%T Time-Frequency Analysis of Sj£¿strand's Class
%A Karlheinz Gr£¿chenig
%J Mathematics
%D 2004
%I arXiv
%X We investigate the properties an exotic symbol class of pseudodifferential operators, Sj\"ostrand's class, with methods of timne-frequency analysis (phase space analysis). Compared to the classical treatment, the time-frequency approach leads to striklingly simple proofs of Sj\"ostrand's fundamental results and to far-reaching generalizations.
%U http://arxiv.org/abs/math/0409280v1