Global analytic regularity for sums of squares of vector fields

Authors :: Paulo D. Cordaro
A. Alexandrou Himonas
Source :: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP
Publication Year :: 1998
Abstract: We consider a class of operators in the form of a sum of squares of vector fields with real analytic coefficients on the torus and we show that the zero order term may influence their global analytic hypoellipticity. Also we extend a result of Cordaro-Himonas.

Subjects :: Zero order
Class (set theory)
Applied Mathematics
General Mathematics
Mathematical analysis
EQUAÇÕES DIFERENCIAIS PARCIAIS NÃO LINEARES
Explained sum of squares
Applied mathematics
Vector field
Torus
Term (time)
Mathematics

Database :: OpenAIRE
Journal :: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP
Accession number :: edsair.doi.dedup.....e71d6d9670d6f55574c62eeb7efd7249

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