PAULA, Gabrieli Silva Ney de; http://lattes.cnpq.br/1380399700569253 (Universidade Federal de ItajubáBrasilIEPG - Instituto de Engenharia de Produção e GestãoPrograma de Pós-Graduação: Mestrado - MatemáticaUNIFEI, 2024-02-26)
Nodes are equilibria of a planar differential equation or vector field whose eigenvalues
have the same sign. Star nodes are nodes whose eigenvalues are equal and nonzero. Limit
cycles are closed and isolated orbits in ...