A quasianalytic singular spectrum with respect to the Denjoy-Carleman class
A quasianalytic singular spectrum with respect to the Denjoy-Carleman class
Abstract Making use of the FBI (Fourier-Bros-Iagolnitzer) transforms we simplify the quasianalytic singular spectrum for the Fourier hyperfunctions, which was defined for distributions by Hörmander as follows; for any Fourier hyperfunction u , ( x 0 , ξ 0 ) does not belong to the quasianalytic singular spectrum W F …