Asymptotics for Dissipative Nonlinear Equations Preliminary results Weak Nonlinearity Critical Nonconvective Equations Critical Convective Equations Subcritical Nonconvective Equations Subcritical Convective Equations. Many of problems of the natural sciences lead to nonlinear partial differential equations. However only a few of them have succeeded in being solved explicitly. Therefore different methods of qualitative analysis such as the asymptotic methods play a very important role. This is the first book in the world literature giving a systematic development of a general asymptotic theory for nonlinear partial differential equations with dissipation. Many typical well known equations are considered as examples such as: nonlinear heat equation KdVB equation nonlinear damped wave equation Landau Ginzburg equation Sobolev type equations systems of equations of Boussinesq Navier Stokes and others.