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CAT(0) spaces and expanders |
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| Authors: | Takefumi Kondo |
| Institution: | 1. Department of Mathematics, Graduate School of Science, Kobe University, 1-1 Rokkodai, Kobe, 657-8501, Japan |
| Abstract: | We construct a CAT(0) space Y with Izeki–Nayatani invariant δ(Y) =?1. By a similar construction, we also prove that there exists a CAT(0) space which does not have Markov type p for every p?>?1. |
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