Browsing Teses e dissertações by Author "Simsen, Jacson"
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Hipoeliticidade global e vetores simultaneamente aproximáveis.
Simsen, Jacson (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Matemática - PPGM, , 11/08/2003)A necessary and sufficient condition is given for a sum of squares operator to be globally hypoelliptic. This condition is expressed in terms of Diophatine approximation properties of the coefficients. The proof of the ... -
Semicontinuidade superior de atratores para semigrupos multívocos
Simsen, Jacson (Universidade Federal de São Carlos, UFSCar, Programa de Pós-Graduação em Matemática - PPGM, , 16/08/2007)In this work we developed an abstract theory for existence and characterization of attractors for multivalued semigroups defined by generalized semi ows and we apply the abstract results to systems of p-laplacian ...