Mathematics – Analysis of PDEs
Scientific paper
2003-03-03
Journal of Differential Equations {\bf 213} (2) (2005), pp.~341-351.
Mathematics
Analysis of PDEs
AMS-LaTeX, 10 pp
Scientific paper
We show that all smooth solutions of model non-linear sums of squares of
vector fields are locally real analytic. A global result for more general
operators is presented in a paper by Makhlouf Derridj and the first author
under the title "Global Analytic Hypoellipticity for a Class of Quasilinear
Sums of Squares of Vector Fields".
Tartakoff David S.
Zanghirati Luisa
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