An accuracy improvement in Egorov’s Theorem
نویسندگان
چکیده
منابع مشابه
An Accuracy Improvement in Egorov’s Theorem
We prove that the theorem of Egorov, on the canonical transformation of symbols of pseudodifferential operators conjugated by Fourier integral operators, can be sharpened. The main result is that the statement of Egorov’s theorem remains true if, instead of just considering the principal symbols in S/S for the pseudodifferential operators, one uses refined principal symbols in S/S, which for cl...
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ژورنال
عنوان ژورنال: Publicacions Matemàtiques
سال: 2007
ISSN: 0214-1493
DOI: 10.5565/publmat_51107_05