Wave front set defined by wave packet transform and its application
Wave front set defined by wave packet transform and its application
<!-- *** Custom HTML *** --> We introduce the wave front set $WF_s^{p,q}$ by using the wave packet transform. This is another characterization of the Fourier–Lebesgue type wave front set $WF_{\mathcal{F}L_s^q}$. We apply this to the propagation of singularities for the wave equation.