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...
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...
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...
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...
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...