Díaz Díaz, Jesús IldefonsoAlvino, A.Lions, P.L.Trombetti, G.2023-06-202023-06-201992-06-180764-4442https://hdl.handle.net/20.500.14352/57505We present a new proof of comparison results via Steiner symmetrization for solutions of elliptic equations. This proof relies upon a "level sets" argument.engjournal articlehttp://onlinelibrary.wiley.com/doi/10.1002/(SICI)1097-0312(199603)49:3%3C217::AID-CPA1%3E3.0.CO;2-G/pdfrestricted access517.937Steiner symmetrizationEcuaciones diferenciales1202.07 Ecuaciones en Diferencias