A Characterization of Compact SG Pseudo-differential Operators on L2(ℝn)
Department of Mathematics and Statistics, Queen’s
University University Avenue, Kingston, Ontario
Corresponding author. E-mail: firstname.lastname@example.org
We give a necessary and sufficient condition for pseudo-differential operators with SG symbols to be compact from L2(ℝn) into L2(ℝn).
Mathematics Subject Classification: 35S05 / 47G30
Key words: SG pseudo–differential operators / compact operators / Calkin algebra / Fredholmness / essential spectra
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