Circle actions on almost complex manifolds with isolated fixed points

In Jang (2014), the author proves that if the circle acts symplectically on a compact, connected symplectic manifold M with three fixed points, then M is equivariantly symplectomorphic to some standard action on CP2. In this paper, we extend the result to a circle action on an almost complex manifold; if the circle acts on a compact, connected almost complex manifold M with exactly three fixed points, then dimM=4. Moreover, the weights at the fixed points agree with those of a standard circle action on the complex projective plane CP2. Also, we deal with the cases of one fixed point and two fixed points.