A Characterization of Compact Pseudo-Differential Operators on mathbb{S}^1
A Characterization of Compact Pseudo-Differential Operators on mathbb{S}^1
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mathbb{S}^1 上紧致伪微分算子的表征
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发表时间:
2011
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通讯作者:
S. Molahajloo
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作者:
S. Molahajloo
We first prove that a pseudo-differential operator of symbol of order 0 is essentially normal. Then by using Gohber’s lemma and a result from [6], a necessary and sufficient condition for compactness of pseudo-differential operators on the unit circle is given.