Abstract
We classify locally compact, geodesically complete, 2-dimensional Hadamard spaces whose Tits ideal boundaries have the minimal diameter . Furthermore, we classify the universal covering spaces of certain 2-dimensional nonpositively curved spaces, which is an extension of the result obtained in the polyhedral case by W. Ballmann, M. Brin, and S. Barré.
Citation
Koichi NAGANO. "Asymptotic rigidity of Hadamard 2-spaces." J. Math. Soc. Japan 52 (4) 699 - 723, October, 2000. https://doi.org/10.2969/jmsj/05240699
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