by Alexandre Zenchuk
Landau Institute, Kosygina 2
Moscow 117334
Russia
Monday, June 15, 1998 15:15 h
at MAT, Building 303, room 026
Abstract:The Fourier method allows one to solve completely
a system of linear PDEs with constant coefficients. But this method can in
general not be used when nonlinear systems of PDEs are under consideration.
One special method that has been developed to solve a large class of nonlinear
PDE's is know as the Dressing Method, and the equations that can be treated by
it are called completely integrable.
The main idea of this method is to relate the nonlinar PDE's to a corresponding
set of linear equations, which are integral equations with a kernel of concrete
structure, or PDE's with variable coefficients. The problem of solving the
the nonlinear equation is then reduced to solving the linear equation.
The Dressing Method has several versions (V.E.Zakharov, A.B.Shabat,
S.V.Manakov). One recent version which we will discuss is the so called
D-bar problem. It relates solutions of nonlinear PDE with solutions
of a linear integral equation having a kernel of a certain type.
