2014-07-292012-12-112012-07-30ANDRADE, Kamila da Silva. The coexistence of four limit cycles in piecewise linear vector fields on R3. 2012. 77 f. Dissertação (Mestrado em Ciências Exatas e da Terra) - Universidade Federal de Goiás, Goiânia, 2012.http://repositorio.bc.ufg.br/tede/handle/tde/1957In this work we study continuous, symmetric and piecewise linear vector fields on R3, we investigate the existence of limit cycles using the closing equations method. More specifically, we study a two parameters family of this vector fields and we show the coexistence of four limit cycles and too, its realization on Chua s circuit.application/pdfAcesso Abertocampos vetoriais seccionalmente linaresciclos limiteclosing equationspiecewise linear vector fieldslimit cyclesclosing equationsCNPQ::CIENCIAS EXATAS E DA TERRA::MATEMATICA::GEOMETRIA E TOPOLOGIA::SISTEMAS DINAMICOSDissertação