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Kapovich, Michael; Leeb, Bernhard und Porti, Joan (2018): A Morse lemma for quasigeodesics in symmetric spaces and euclidean buildings. In: Geometry & Topology, Bd. 22, Nr. 7: S. 3827-3923

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Abstract

We prove a Morse lemma for regular quasigeodesics in nonpositively curved symmetric spaces and euclidean buildings. We apply it to give a new coarse geometric characterization of Anosov subgroups of the isometry groups of such spaces simply as undistorted subgroups which are uniformly regular.

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