Classical, viscosity and average solutions for PDE’s with nonnegative characteristic form
Cristian E. Gutiérrez, Ermanno Lanconelli (2004)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
Similarity:
We compare several definitions of weak solutions to second order partial differential equations with nonnegative characteristic form.