2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/67723We study the distance function to the boundary, Finsler geometry and the singular set of viscosity solutions of some Hamilton-Jacobi equations.Analysis of PDEs49L25; 53C22; 58B20The distance function to the boundary, Finsler geometry and the singular set of viscosity solutions of some Hamilton-Jacobi equationstext