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  • Geometric tools to determine the hyperbolicity of limit cycles 

    Guillamon Grabolosa, Antoni; Sabatini, Marco (2005)
    Open Access
    In this paper we present a new method to study limit cycles’ hyperbolicity. The main tool is the function ? = ([V,W] ^ V )/(V ^W), where V is the vector field under investigation and W a transversal one. Our approach ...