2 papers
math.DG2005
Forms and Ricci flow with bounded curvature on Complete Non-compact manifolds
Li Ma, Yang Yang
In this paper, we study the evolution of one forms under Ricci flow with bounded curvature on a non-compact Rimennian manifold. We show on such a manifold that the norm…
math.AP2003
Some remarks on sub-elliptic equations
Li Ma, Dezhong Chen, Yang Yang
In this paper, we consider the principal eigenvalue problem for Hormander's laplacian on . We also study a related semi-linear sub-elliptic equation in the whole and pro…