symmetry;
water waves;
vorticity;
nonlinear partial differential equation;
D O I:
10.3934/dcds.2007.19.483
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We show that for steady, periodic, and rotational gravity deep-water waves, a monotone surface profile between troughs and crests implies symmetry. It is observed that if the vorticity function has a bounded derivative, then it vanishes as one approaches great depths.