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Proper actions on strongly regular homogeneous spaces
Published 28 Jan 2015 in math.DG | (1501.07200v1)
Abstract: Let G/H be a strongly regular homogeneous space such that H is a Lie group of inner type. We show that G/H admits a proper action of a discrete non-virtually abelian subgroup of G if and only if G/H admits a proper action of a subgroup L of G locally isomorphic to SL(2,R). We classify all such spaces.
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