In this paper we prove a relaxation result for a class of degenerate Hamilton–Jacobi equations; i.e., equations which do not admit a strict subsolution, extending in some directions the results in  and .
A relaxation result for a class of degenerate Hamilton-Jacobi equations / Camilli, Fabio; C., Pignotti. - In: DIFFERENTIAL AND INTEGRAL EQUATIONS. - ISSN 0893-4983. - STAMPA. - 18:(2005), pp. 419-430.