Categoria:
Seminari di Analisi Matematica
Data e ora inizio evento:
Data e ora fine evento:
Aula:
Sala di Consiglio
Sede:
Dipartimento di Matematica Guido Castelnuovo, Sapienza Università di Roma
Speaker:
Tobias WETH UNIVERSITAT GIESSEN
I will discuss some recent results on the existence of multiple solutions to equations of the form −∆u = f(x, u), where the nonlinearity f has subcritical or critical growth. In some cases we find sign changing solutions. The results are obtained by combining variational methods, information on gradient flow invariant sets, and topological tools including Dold’s fixed point transfer.