4 papers
math.AP2025
Super Log-concavity of the First Eigenfunctions for Horo-convex Domains in Hyperbolic Space
Guofang Wei, Ling Xiao
In this paper, we prove that the first eigenfunction of the Laplacian for a horo-convex domain is super log-concave when is not large. Our…
math.AP2025
Exterior Dirichlet problem for Hessian equations on a non-convex ring
Yanyan Li, Ling Xiao
In this paper, we prove the existence of a solution for the exterior Dirichlet problem for Hessian equations on a non-convex ring. Moreover, the solution we obtained is smooth. Thi…
math.DG2025
An isoperimetric type inequality in De Sitter space
Ling Xiao
In this paper, we prove an optimal isoperimetric inequality for spacelike, compact, star-shaped, and -convex hypersurfaces in de Sitter space.
math.DG2025
Closed minimal hypersurfaces in with constant and
Joel Spruck, Ling Xiao
In this paper, we prove that a closed minimally immersed hypersurface with constant and whos…