摘要
Thepurposeofthispaperistostudycompletespace-likesubmanifoldswithparallelmeancurvaturevectorandflatnormalbundleinalocallysymmetricsemi-defnitespacesatisfyingsomecurvatureconditions.WefirstgiveanoptimalestimateoftheLaplacianofthesquarednormofthesecondfundamentalformforsuchsubmanifold.Furthermore,thetotallyumbilicalsubmanifoldsarecharacterized.
出版日期
2004年04月14日(中国期刊网平台首次上网日期,不代表论文的发表时间)