Spectral invariance, ellipticity, and th
✍
Elmar Schrohe
📂
Article
📅
1992
🏛
Springer
🌐
English
⚖ 840 KB
The pseudodifferential operators with symbols in the Grushin classes S,~, 0 < < p < 1, of slowly varying symbols are shown to form spectrally invariant unital Fr6chet-\*-algebras (\*-algebras) in £(L 2 (Rn)) and in £(Hz t ) for weighted Sobolev spaces Hit defined via a weight function y. In all case