  The author proved 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 $\mathbb{CP}^2$. 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 $\dim M=4$. Moreover, we deal with
the cases of one fixed point and two fixed points.

Differential Geometry;Symplectic Geometry