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Part µ: Invariant measures and long time behavior for the BenjaminOno equation¡¡ 
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¹Ö±é¼ÔÌ¾  Nikolay Tzvetkov 
¹Ö±é¼Ô½êÂ°  Universite de CergyPontoise 
³µÍ×  The KdV and the BenjaminOno equations are basic models,
derived from the water waves equations for the propagation
of long, small amplitude one dimensional waves. The
solutions of the KdV equations, posed on the torus are
known to be almost periodic in time. The long time
behavior of the BenjaminOno equation, posed on the torus
is much less understood. In this talk, we will present
some progress on this problem. Namely, we shall construct
an infinite sequence of weighted gaussian measures which
are invariant by the flow of the BenjaminOno equation.
These measures are supported by Sobolev spaces of
increasing regularities. The "probabilistic view point" is
essential in our analysis. In particular our arguments are
less dependent on the particular behavior of each
trajectory, compared to previous works on the subject. The
talk is based on a series of joint works with Nicola Visciglia. 
È÷¹Í  Part µ (15:30  16:30)
Invariant measures and long time behavior for the
BenjaminOno equation
Part ¶ (17:00  18:00)
Multisolitons for the waterwaves system

¥ê¥ó¥¯  http://www.kurims.kyotou.ac.jp/~nobu/nlpde/ 