Q3760955
type: Item
instance of: scholarly article
zbMATH Open document ID: 0623.35024
author: Yuanzhong Xu
publication date: 1986-01-01T00:00:00Z
Mathematics Subject Classification ID: 35H10
Mathematics Subject Classification ID: 35E20
zbMATH DE Number: 4011034
zbMATH Keywords: Q-hypoellipticity
zbMATH Keywords: constant coefficients
MaRDI profile type: Publication
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