Daniel Hu

collaborators

3 papers

math.MG2019

Extreme Points on Circumconics Induced by Isogonal Conjugates in a Triangle

Daniel Hu

We first introduce a configuration of arbitrary isogonal conjugates related to a known property concerning the spiral center of two pairs of isogonal conjugates. We then consider a…

math.HO2019

Constructions in the Locus of Isogonal Conjugates in a Quadrilateral

Daniel Hu

Given fixed distinct points $A, B, C, D$ , we examine properties of the locus of points $X$ for which $(X A, X C)$ , $(X B, X D)$ are isogonal. This locus is a cubic curve circumscribing…

math.DG2018

Translating surfaces of the non-parametric mean curvature flow in Lorentz manifold $M^{2} \times R$

Li Chen, Dan-Dan Hu, Jing Mao +1

In this paper, for the Lorentz manifold $M^{2} \times R$ , with $M^{2}$ a $2$ -dimensional complete surface with nonnegative Gaussian curvature, we investigate its space-like…

Extreme Points on Circumconics Induced by Isogonal Conjugates in a Triangle

Constructions in the Locus of Isogonal Conjugates in a Quadrilateral

Translating surfaces of the non-parametric mean curvature flow in Lorentz manifold M2×R

Translating surfaces of the non-parametric mean curvature flow in Lorentz manifold $M^{2} \times R$