Path Formulation for Z2Z2-equivariant Bifurcation Problems

  • João Carlos Ferreira Costa
  • Angela Maria Sitta
Conference paper
Part of the Trends in Mathematics book series (TM)


M. Manoel and I. Stewart ([10]) classify ℤ2 ⊕ ℤ2-equivariant bifurcation problems up to codimension 3 and 1 modal parameter, using the classical techniques of singularity theory of Golubistky and Schaeffer [8]. In this paper we classify these same problems using an alternative form: the path formulation (Theorem 6.1). One of the advantages of this method is that the calculates to obtain the normal forms are easier. Furthermore, in our classification we observe the presence of only one modal parameter in the generic core. It differs from the classical classification where the core has 2 modal parameters. We finish this work comparing our classification to the one obtained in [10].


Path formulation equivariant bifurcation problems Z2Z2-symmetry classification 


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Copyright information

© Birkhäuser Verlag Basel/Switzerland 2006

Authors and Affiliations

  • João Carlos Ferreira Costa
    • 1
  • Angela Maria Sitta
    • 1
  1. 1.Depto. Matemática - IBILCE-UNESPSão José do Rio Preto-SPBrazil

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