Short-time Fourier transform of the pointwise product of two functions with application to the nonlinear Schrödinger equation

Nuno Costa Dias, João Nuno Prata, Nenad Teofanov

We show that the short-time Fourier transform of the pointwise product of two functions $f$ and $h$ can be written as a suitable product of the short-time Fourier transforms of $f$…