On the hypoellipticity and the global analytic-hypoellipticity of pseudo- differential operators
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Publication:1211642
zbMath0292.35020MaRDI QIDQ1211642
Publication date: 1974
Published in: Osaka Journal of Mathematics (Search for Journal in Brave)
Pseudodifferential operators as generalizations of partial differential operators (35S05) Degenerate elliptic equations (35J70) Hypoelliptic equations (35H10)
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