Submanifolds of Pn(l) with Splitting Tangent Sequence

• 作者: Duo LI
• 来源期刊: 数学学报（英文版）
• 年，卷（期）: 2022,（2）
• 页码范围: 397-405
• 页数: 9页
• 语种: 英文

摘要

Let l be a line in a projective space Pn.We consider the blowing up Pn(l) of Pn along l.Assume that X is a smooth closed subvariety of Pn.If the strict transform of X in Pn(l) has a splitting tangent sequence and dim X is at least 2,then X is a linear subspace of Pn.