Monnard, Alex2015-05-292015-05-292015-05-29201510.1016/j.jalgebra.2014.12.009https://infoscience.epfl.ch/handle/20.500.14299/114428WOS:000349138000003We prove the non-existence of expansive subgroups with trivial global core in different families of Roquette groups. This study is motivated by the importance of expansive subgroups in the theory of stabilizing bisets highlighted in [4].Roquette groupExpansive subgroupStabilizing bisettext::journal::journal article::research article