Microlocal analysis in the dual of a Colombeau algebra: generalized wave front sets and noncharacteristic regularity

摘要

We introduce different notions of wave front set for the functionals in thedual of the Colombeau algebra $\Gc(\Om)$ providing a way to measure the $\G$and the $\Ginf$- regularity in $\LL(\Gc(\Om),\wt{\C})$. For the smaller familyof functionals having a ``basic structure'' we obtain a Fouriertransform-characterization for this type of generalized wave front sets andresults of noncharacteristic $\G$ and $\Ginf$-regularity.