Diversified homotopy behavior of closed orbits of some **R**-covered
Anosov flows

Sergio Fenley

We produce infinitely many examples of Anosov flows in closed 3-manifolds where the set of periodic orbits is partitioned in two infinite subsets. In one subset every closed orbit is freely homotopic to infinitely other closed orbits of the flow. In the other subset every closed orbit is freely homotopic to only one other closed orbit. The examples are obtained by Dehn surgery on geodesic flows. The manifolds are toroidal and have Seifert pieces and atoroidal pieces in their torus decompositions.