Cone Restriction Estimates under Half-Scale Dimensional Conditions

Abstract

We study weighted Fourier extension estimates for the truncated cone. Building on the framework of Du--Li--Wang--Zhang, we introduce a more refined trilinear estimate. We obtain this estimate by applying weighted bilinear restriction on half-scale cubes and combining tube traversal with trilinear Kakeya to sum the local packet energies. Together with Lorentz rescaling, it yields improved weighted extension estimates.