Project supported by the National Natural Science Foundation of China(No. 10471113) and the Natural Science Foundation of Zhejiang Province(No. M103098).
<正>In this paper we consider the Cauchy problem for the mass-critical Hartree equation iδ_iu+Δu=μ(|x|~2*|u|~2)u,(t,x)∈R×R~n,n>=3,(1) u(0,x)=φ(x),x∈R