摘要

Li and Wang [J Differ Geom 58:501-534 (2001), J Differ Geom 62:143-162 (2002)] proved a splitting theorem for an n-dimensional Riemannian manifold with Ric >= -(n - 1) and the bottom of spectrum lambda(0)(M) = (n-1)(2)/4. For an n-dimensional compact manifold M with Ric >= -(n - 1) with the volume entropy h(M) = n - 1, Ledrappier and Wang (J Differ Geom 85:461-477, 2010) proved that the universal cover (M) over tilde is isometric to the hyperbolic space H-n. We will prove analogue theorems for Alexandrov spaces.

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