Open AccessOn hypoellipticity of the operator $\exp[-\vert x\sb 1\vert \sp {-\sigma}]D\sp 2\sb 1+x\sp 4\sb 1D\sp 2\sb 2+1$
Author(s) -
Nobuo Nakazawa,
Seiichiro Wakabayashi
Publication year - 2002
Publication title -
publications of the research institute for mathematical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 39
eISSN - 1663-4926
pISSN - 0034-5318
DOI - 10.2977/prims/1145476419
Subject(s) - mathematics , sigma , operator (biology) , antimony , combinatorics , pure mathematics , crystallography , chemistry , physics , inorganic chemistry , quantum mechanics , gene , biochemistry , repressor , transcription factor