activity
20082025
most citedA proof of the DDVV conjecture and its equality case

10 citations · 18 across the 4 of their papers we have counts for

collaborators

7 papers

math.DG2025

Isoparametric foliations and complex structures

Chao Qian, Zizhou Tang, Wenjiao Yan

Explicit representations of complex structures on closed manifolds are valuable, but relatively rare in the literature. Using isoparametric theory, we construct complex structures…

math.DG2022

On two questions of James

Chao Qian, Zizhou Tang, Wenjiao Yan

64 years ago, I. M. James raised two fundamental questions about octonionic Stiefel spaces. The prime objective of this paper is to figure out partial answers to both of them.

math.DG2019

Extrinsic geometry of the Gromoll-Meyer sphere

Chao Qian, Zizhou Tang, Wenjiao Yan

Among a family of 2-parameter left invariant metrics on Sp(2), we determine which have nonnegative sectional curvatures and which are Einstein. On the quotiente $\widetilde{N}^{11}…

math.DG20182 cited

Clifford algebra, isoparametric foliation and related geometric constructions

Chao Qian, Zizhou Tang

Based on representation theory of Clifford algebra, Ferus, Karcher and Münzner constructed a series of isoparametric foliations. In this paper, we will survey recent studies on iso…

math.DG2018

A sufficient condition for a hypersurface to be isoparametric

Zizhou Tang, Dongyi Wei, Wenjiao Yan

Let be a closed Riemannian manifold on which the integral of the scalar curvature is nonnegative. Suppose is a symmetric tensor field whose dual $(1,1)…

math.DG20176 cited

Isoparametric theory and its applications

Zizhou Tang, Wenjiao Yan

This is a survey on the recent progress in several applications of isoparametric theory, including an affirmative answer to Yau's conjecture on the first eigenvalue of Laplacian in…