Dr. Lars Kindler:
Ramification theory for D-modules in positive characteristic
Zeit und Ort
Freitag, 6.2.15, 10:15-11:15, Raum 404, Eckerstr. 1
Zusammenfassung
Abstract: On a smooth variety in positive characteristic, a\nvector bundle carrying an action of the sheaf of\ndifferential operators is called a stratified bundle. I\nwill give a brief introduction into the theory of these\nobjects and I will explain the notion of regular\nsingularity for stratified bundles. This notion is closely\nrelated to tame ramification of étale coverings. For\nstratified bundles on a curve, I will sketch the beginning\nof a higher ramification theory of stratified bundles,\nanalog to higher ramification theory of étale coverings.