Anne Springer 1,*, Annette Eicker 1,2, Anika Bettge 1, Jürgen Kusche 1 and Andreas Hense 3 1 Institute of Geodesy and Geoinformation, Bonn University, 53115 Bonn, Germany; [email protected] (A.E.); [email protected] (A.B.); [email protected] (J.K.) 2 Hafen-City University, 20457 Hamburg, Germany 3 Meteorological Institute, Bonn University, 52121 Bonn, Germany; ahense@uni-bo...

Let G be a connected reductive algebraic group over the algebraic closure of a finite field Fq of good characteristic. In this paper, we demonstrate a remarkable compatibility between the Springer correspondence for G and the parametrization of unipotent characters of G(Fq). In particular, we show that in a suitable sense, “large” portions of these two assignments in fact coincide. This extends...

We construct here many families of K3 surfaces that one can obtain as quotients algebraic by some subgroups the rank four complex reflection groups. find in total 15 with at worst $ADE$--singularities. In particular we classify all be obtained derived subgroup previous prove our results using geometry weighted projective spaces where these are embedded and theory Springer Lehrer-Springer on pro...