Dal Maso, GianniDe Luca, Lucia2018-06-052018-06-052018-06https://openscience.sissa.it/handle/1963/35318We prove the existence of weak solutions to the homogeneous wave equation on a suitable class of time-dependent domains. Using the approach suggested by De Giorgi and developed by Serra and Tilli, such solutions are approximated by minimizers of suitable functionals in space-time.enwave equationtime-dependent domainsminimizationPreprintMAT/05