On the number of periodic orbits of Morse-Smale flows on graph manifolds

Details On the number of periodic orbits of Morse-Smale flows on graph manifolds On the number of periodic orbits of Morse-Smale flows on graph manifolds

2012-02-09

arxiv.org/abs/1202.2042v1

Mathematics

Dynamical Systems

12 pages, 2 figures

Scientific paper

For a closed oriented 3-manifold $Y$ we define $n(Y)$ to be the minimal non-negative number such that in each homotopy class of non-singular vector fields of $Y$ there is a Morse-Smale vector field with less or equal to $n(Y)$ periodic orbits. We combine the construction process of Morse-Smale flows given in [2] with handle decompositions of compact orientable surfaces to provide an upper bound to the number $n(Y)$ for oriented Seifert manifolds and oriented graph manifolds prime to $\stwo\times\sone$.

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