Manifolds of Nonpositive Curvature (Progress in Mathematics (Birkhauser Boston)) - Werner Ballmann, Gromov, Mikhael, Schroeder, Viktor (1986) |
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Notes |
Based on four lectures delivered by M. Gromov in Feb. 1981 at Colle`ge de France, Paris, with appendices by W. Ballmann and V. Schroeder. |