Open AccessOn Hypoellipticity of the Operator $\exp[−|x_1|^{−σ}]D_1^2 + x_1^4 D_2^2 + 1$
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 , operator (biology) , pure mathematics , mathematical analysis , mathematical physics , combinatorics , chemistry , biochemistry , repressor , transcription factor , gene
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