publicações selecionadas Improved regularity for the porous medium equation along zero level sets Fractional Sobolev regularity for fully nonlinear elliptic equations Improved regularity for the p-Poisson equation Métricas com Q-curvatura constante via um fluxo não local e um princípio do máximo para o operador de Paneitz Regularity theory for fully nonlinear models: interfaces and free boundaries Geometric regularity for elliptic equations in double-divergence form