BULLETIN MATHEMATIQUE DE LA SOCIETE DES SCIENCES MATHEMATIQUES DE ROUMANIE, cilt.58, sa.2, ss.161-166, 2015 (SCI-Expanded)
In this paper, we study the non-existence of equivariant maps of 2-connected compact manifold with effective circle actions. It was given a necessary condition for a map between 3-spheres to be equivariant for an effective circle action.