A notion of nonpositive curvature for general metric spaces☆
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MSC
primary
51F99
53B20
secondary
52C99
Keywords
Comparison geometry
Geodesic space
Kirszbraun's theorem
Nonpositive curvature
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The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement No. FP7-267087.
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Current address: School of Mathematical Sciences, LMNS, Fudan University, Shanghai 200433, China.
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