Semi-linearity of the non-linear Fourier transform of the defocusing NLS equation
T. KappelerB. SchaadP. Topalov
所有作者
T. KappelerB. SchaadP. Topalov
文献摘要
In this paper we prove that the non-linear Fourier transform of the
defocusing NLS equation on the circle is linear up to terms which are one order
smoother.