Parabolic subgroup orbits on finite root systems
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DOI: 10.1016/j.jpaa.2018.02.010
Abstract: Oshima's Lemma describes the orbits of parabolic subgroups of irreducible finite Weyl groups on crystallographic root systems. This note generalises that result to all root systems of finite Coxeter groups, and provides a self contained… read more here.
Keywords: orbits finite; subgroup orbits; finite root; parabolic subgroup ... See more keywords