arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.03140math.DG
收藏

$RP^n$上的径向规定数量曲率

Radial prescribing scalar curvature on $RP^n$

Liu Hong

摘要:

X.Xu和P.C.Yang [2]在1993年对径向规定数量曲率的研究表明了关于$S^2$的不存在性。后来在1995年,W.Chen和C.Li [2]将不存在性结果推广到高维。G.Bianchi和E.Egnell [1]提出在$RP^n.$的标准共形类中可能存在一些非负光滑径向函数,但它们不可能是数量曲率.本文证明了所有在极点上为正的光滑径向非负光滑函数都可能是规定数量曲率的.我们考虑商$\frac{v_λ}{V_λ}$,而不是像[1]中那样考虑差$v_λ-V_λ$。这个技巧产生了一个关于存在的简明论证。因此,[1]中所述的反例在$RP^n.$上不成立

英文摘要:

The study of radial prescribing scalar curvature of X.Xu and P.C.Yang [2] in 1993 showed a nonexistence result on $S^2$. Later in 1995, W.Chen and C.Li [2] generalized the nonexistence result to higher dimensions. G.Bianchi and E.Egnell [1] suggested that there may exist some non-negative smooth radial function which cannot be scalar curvature in the standard conformal class of $RP^n.$ However, in our paper, we prove that all smooth radial non-negative smooth functions which are positive on the pole could be prescribing scalar curvatures. We consider the quotient $\frac{v_λ}{V_λ}$ rather than the difference $v_λ-V_λ$ as in [1]. This trick yields a concise argument of the existence. Consequently, their counter examples stated in [1] cannot be true on $RP^n.$

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑