We consider the existence problem of invariant tori for quasi-periodic equation. We regard quasi-periodic functions with n frequencies as periodic functions of functions with n - 1 frequencies, which constitute a function space. Then we define Poincare's return map of a given semiflow on the space whose fixed point corresponds to an invariant torus of the semiflow.
|Number of pages||11|
|Journal||Communications on Pure and Applied Analysis|
|Publication status||Published - 2008 Mar 1|
All Science Journal Classification (ASJC) codes
- Applied Mathematics