国家自然科学基金(11331002)

作品数:9被引量:5H指数:1
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Minimal two-spheres with constant curvature in the quaternionic projective space被引量:1
《Science China Mathematics》2020年第5期993-1006,共14页Jie Fei Chiakuei Peng Xiaowei Xu 
supported by National Natural Science Foundation of China(Grant Nos.11471299,11401481 and 11331002)。
In this paper we completely classify the homogeneous two-spheres,especially,the minimal homogeneous ones in the quaternionic projective space HPn.According to our classification,more minimal constant curved two-sphere...
关键词:minimal two-sphere Gauss curvature quaternionic projective space 
等参情形的丘成桐第一特征值猜想被引量:1
《中国科学:数学》2018年第6期819-826,共8页唐梓洲 彦文娇 
国家自然科学基金(批准号:11331002和11722101)资助项目
本文将对丘成桐第一特征值猜想的提出与发展,以及等参情形的完全解决进行综述,并介绍其与Lawson猜想的关系.进一步,本文还计算了等参焦流形(球面的极小子流形)的第一特征值,并提出丘成桐猜想的高余维情形的推广问题.
关键词:等参超曲面 焦流形 LAPLACE算子 丘成桐第一特征值猜想 Lawson猜想 
Conformally flat Lorentzian hypersurfaces in R_1~4 with three distinct principal curvatures被引量:2
《Science China Mathematics》2018年第5期897-916,共20页Xiaozhen Wang Changping Wang Zhenxiao Xie 
supported by National Natural Science Foundation of China (Grant Nos. 11331002, 11471021 and 11601513);the Fundamental Research Funds for Central Universities;the Project of Fujian Provincial Department of Education (Grant No. JA15123)
A three dimensional Lorentzian hypersurface x : M_1~3→ R_1~4 is called conformally flat if its induced metric is conformal to the flat Lorentzian metric, and this property is preserved under the conformal transformat...
关键词:conformally flat Lorentzian hypersurfaces conformal geometry of Lorentzian space forms integrability equations 
复Grassmann流形中的实迷向极小二维球面
《中国科学:数学》2017年第7期827-840,共14页焦晓祥 徐言 
国家自然科学基金(批准号:11471308和11331002)资助项目
本文研究了复Grassmann流形中极小曲面的两种迷向性质之间的关系.首先给出了实迷向的定义,之后用整体微分形式刻画实迷向性质,然后介绍Calabi的线丛上的联络理论作为主要计算方法,最终运用调和序列理论证明复迷向性质强于实迷向.作为应...
关键词:实迷向 极小曲面 调和序列 
求CP^n的SU(2)轨道的根分布方法
《中国科学院大学学报(中英文)》2016年第4期438-442,共5页李小虎 肖良 
国家自然科学基金(11331002)资助
从根分布的角度,对齐性二维球面分类结果给出比Bando和Ohnita(J Math Soc Japan,1987,39:477)更加明显的刻画,求出决定齐性二维球面的SU(2)轨道的李群多项式表示的显式表达式,证明复射影空间中SU(2)轨道的维数取决于一个对应的扩大复平...
关键词:SU(2) MOBIUS变换 齐性空间 复射影空间 球极投影 
On Submanifolds Whose Tubular Hypersurfaces Have Constant Higher Order Mean Curvatures
《Acta Mathematica Sinica,English Series》2016年第4期474-498,共25页Tian Shou JIN Jian Quan GE 
partially supported by NSFC(Grant No.11331002);the Fundamental Research Funds for the Central Universities
Motivated by the theory of isoparametric hypersurfaces,we study submanifolds whose tubular hypersurfaces have some constant higher order mean curvatures.Here a k-th order mean curvature Q_k^v(k ≥ 1) of a submanifol...
关键词:Isoparametric hypersurface constant mean curvature austere submanifold 
复Grassman流形中齐性三维球面的一种构造
《中国科学院大学学报(中英文)》2016年第1期9-15,共7页何思 肖良 
国家自然科学基金(11331002)资助
证明复Grassman流形中的齐性三维球面可以作为一个三维的ρ(SU(2))轨道,然后利用SU(2)和SU(2)×SU(2)的表示理论给出具体构造这种齐性三维球面的方法。
关键词:表示论 SU(2) SU(2)×SU(2) 齐性三维球面 复Grassman流形 
Wintgen ideal submanifolds with a low-dimensional integrable distribution被引量:1
《Frontiers of Mathematics in China》2015年第1期111-136,共26页Tongzhu LI Xiang MA Changping WANG 
The authors thank Dr. Zhenxiao Xie for helpful discussion which deepen the understanding of the main results, and they are grateful to the referees for their critical viewpoints and suggestions, which improve the exposition and correct many errors. This work was supported by the National Natural Science Foundation of China (Grant No. 11171004); Xiang Ma was partially supported by the National Natural Science Foundation of China (Grant No. 10901006); and Changping Wang was partially supported by the National Natural Science Foundation of China (Grant No. 11331002).
Submanifolds in space forms satisfy the well-known DDVV inequality. A submanifold attaining equality in this inequality pointwise is called a Wintgen ideal submanifold. As conformal invariant objects, Wintgen ideal su...
关键词:Wintgen ideal submanifold DDVV inequality super-conformalsurface super-minimal surface 
Mbius geometry of three-dimensional Wintgen ideal submanifolds in S^5被引量:1
《Science China Mathematics》2014年第6期1203-1220,共18页XIE ZhenXiao LI TongZhu MA Xiang WANG ChangPing 
supported by National Natural Science Foundation of China (Grant Nos. 10901006,11171004 and 11331002)
Wintgen ideal submanifolds in space forms are those ones attaining equality at every point in the socalled DDVV inequality which relates the scalar curvature,the mean curvature and the normal scalar curvature.This pro...
关键词:Wintgen ideal submanifolds DDVV inequality MSbius geometry austere submanifolds complexcurves 
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