6 citations · 6 across the 3 of their papers we have counts for
3 papers
math.DG2018★ 6 cited
Notes on Ricci solitons in -cosymplectic manifolds
Xiaomin Chen
The purpose of this article is to study an -cosymplectic manifold admitting Ricci solitons. Here we consider mainly two classes of Ricci solitons on -cosymplectic manifol…
math.DG2017
Real hypersurfaces of complex quadric in terms of star-Ricci tensor
Xiaomin Chen
In this article, we introduce the notion of star-Ricci tensors in the real hypersurfaces of complex quadric . It is proved that there exist no Hopf hypersurfaces in $Q^m,m\geq…
math.CO2006
Problems related to a de Bruijn - Erdős theorem
Xiaomin Chen, Vašek Chvátal
De Bruijn and Erdős proved that every noncollinear set of n points in the plane determines at least n distinct lines. We suggest a possible generalization of this theorem in the fr…