Gauss曲率具下界的Ricci流

摘要

The existence of Ricci flow on 2-dimension open manifolds with the Gaussian curvature of initial metrics unbounded below was proved.The initial metric can be either complete or incomplete.%证明了一个2维流形上,如果初始Riemann度量的Gauss曲率有下界,则不论度量是否完备,它的Ricci流存在.