4 papers
math.AP2026
Cartan's and Gauss's equations and rigidity theorems for isometric embeddings in low Sobolev regularity
Isaac Newell, Luc Nguyen
Let be a an orthonormal coframe on a domain on a smooth surface . When is smooth, it is well-known that there is a unique connection 1-form $Ï…
math.AP2026
Properties of hypersurface singular sets of solutions to the -Yamabe equation in the negative cone
Jonah A. J. Duncan, Luc Nguyen
We consider conformally flat Lipschitz viscosity solutions to the -Yamabe equation in the negative cone which admit smooth hypersurface singularities. Under natural regularit…
math.AP2025
The -Loewner-Nirenberg problem on Riemannian manifolds for and beyond
Jonah A. J. Duncan, Luc Nguyen
Let be a smooth compact Riemannian manifold of dimension with smooth non-empty boundary . Let be a symmetric convex cone a…
math.AP2025
The fully nonlinear Loewner-Nirenberg problem: Liouville theorems and counterexamples to local boundary estimates
Jonah A. J. Duncan, Luc Nguyen
In this paper we give a complete classification of positive viscosity solutions to conformally invariant equations of the form \begin{align}\label{ab}\tag{} \begin{cases} f(…