In this paper we consider the existence of non-trlvial solutions of the problem:utt-△u+g(u)=o,(1)utt-△u-g(u)=o,(x,t)∈Bn×R (2)under the boundary and periodicity conditions:u|Bn=Q,u(x,t+T)=u(x,t),(3)
文摘In this paper we consider the existence of non-trlvial solutions of the problem:utt-△u+g(u)=o,(1)utt-△u-g(u)=o,(x,t)∈Bn×R (2)under the boundary and periodicity conditions:u|Bn=Q,u(x,t+T)=u(x,t),(3)
