Testerman, DonnaSimion, Iulian Ion2013-06-242013-06-24201310.5075/epfl-thesis-5789https://infoscience.epfl.ch/handle/20.500.14299/92947urn:nbn:ch:bel-epfl-thesis5789-8enalgebraic groupsexceptional groupsunipotent classesdouble centralizersbad characteristicCenters of Centralizers of Unipotent Elements in Exceptional Algebraic Groupsthesis::doctoral thesis