3 papers
math.DG2007
Analytic Extension of a maximal surface in along its boudary
Doan The Hieu, Nguyen Van Hanh
We prove that a maximal surface in Lorentz-Minkowski space can be extended analytically along its boundary if the boundary lies in a plane meeting the surface at a const…
math.DG2007
On the Four Vertex Theorem on planes with radial density
Doan The Hieu, Tran Le Nam
It is showed that on a plane with a radial density the Four Vertex Theorem holds for the class of all simple closed curves if and only if the density is constant. But for the class…
math.DG2005
ADM submanifolds, SL normal bundles examples
Doan The Hieu
It is showed that many examples of AMD submanifolds of higher dimensions come from SL normal bundles. A symmetry property of SL submanifolds and Björling type problem for SL normal…