Abstract:
We investigate the sine-Gordon equation utt−uxx+sinu=0 on the semi-axis x>0. We show that boundary conditions of the forms ux(0,t)=c1cos(u(0,t)/2)+c2sin(u(0,t)/2) and u(0,t)=c are compatible with the Bдcklund transformation. We construct a multisoliton solution satisfying these boundary conditions.
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