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Master's Dissertation
DOI
https://doi.org/10.11606/D.45.1991.tde-20210729-002750
Document
Author
Full name
Cláudio Hirofume Asano
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1991
Supervisor
Title in Portuguese
Hipoelipticidade de uma classe de sistemas sobredeterminados
Keywords in Portuguese
Matemática Aplicada
Abstract in Portuguese
Neste trabalho apresentamos o estudo da hipoelipticidade 'C POT.INFINITO' e 'C POT.OMEGA' de uma classe de sistemas sobredeterminados de campos vetoriais de codimensao 1 utilizando as ideias de h m maire. Estas consistem no estabelecimento de estimativas a priori de tipo sub-eliptico. O sistema em questao e dado por l='D IND.T'-id'VAZIO'E'DELTA IND.X' onde 'VAZIO': b'CONTIDO'R POT.N'SETA'r e de classe 'C POT.OMEGA'. O resultado central e que uma condicao necessaria e suficiente para que l seja 'C POT.INFINITO (OMEGA)'-hipoeliptico e que a integral primeira z (x,t)=x+i'VAZIO' (t) do sistema seja uma aplicacao aberta
Title in English
not available
Abstract in English
not available
 
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Publishing Date
2021-07-29
 
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