Microlocal analysis in the dual of a Colombeau algebra: generalized wave front sets and noncharacteristic regularity.
This work is devoted to a systematic study of the microlocal regularity properties of pseudo-differential operators with the transmission property. We introduce a “boundary singular spectrum”, denoted for distributions , regular in the normal variable (thus, means that near the boundary), and it is shown that is a subset of if has degree and the transmission property. We finally prove that these results can bef used to examinate the (microlocal) regularity of the solutions of differential...
We obtain some microlocal estimates of the resonant states associated to a resonance of an -differential operator. More precisely, we show that the normalized resonant states are