Listar por autor "Osuna, Osvaldo"

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    • On the limit cycles of quasihomogeneous polynomial systems 

      González-Ramírez, L. Rocío; Osuna, Osvaldo; Santaella-Forero, Rubén
      In this work, the nonexistence of limit cycles for classes of p - q-quasi-homogeneous polynomial planar systems of weighted degree l is established. Furthermore, we rule out the existence of limits cycles for certain ...
      Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Matemáticas. 

    • Rigidity of the stable norm on tori 

      Osuna, Osvaldo
      Given a closed, orientable Riemannian manifold, we study the stable norm on the real homology groups. In particular, for $n\geq 2$ we prove that a Riemannian $n$-torus, which has the same stable norms as a flat $n$-torus ...
      Universidad Nacional de Colombia Revistas electrónicas UN Revista Colombiana de Matemáticas.