%0 Journal Article %T On the geometry of the Hilbert schemes of points in the projective plane %A Wei-ping Li %A Zhenbo Qin %A Qi Zhang %J Mathematics %D 2001 %I arXiv %X We classify minimal-degree curves in the Hilbert schemes of points on algebraic surfaces. When the algebraic surface is the projective plane, the nef cone and a flip structure of these Hilbert schemes are determined. %U http://arxiv.org/abs/math/0105213v2