It is shown how the critical exponent of the Dirichlet problem $-\Delta_pu=u^q$ on a ball can be improved modifying appropriately the p-Laplacian $\Delta_p$ or the right hand side.
It is shown how the critical exponent of the Dirichlet problem $-\Delta_pu=u^q$ on a ball can be improved modifying appropriately the p-Laplacian $\Delta_p$ or the right hand side. (en)