Coarse equivalences of Euclidean buildings |
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Authors: | Linus Kramer Richard M. Weiss |
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Affiliation: | 1. Mathematisches Institut, Universität Münster, Einsteinstr. 62, 48149 Münster, Germany;2. Dept. of Mathematics, Tufts University, 503 Boston Ave., Medford, MA 02155, USA |
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Abstract: | We prove the following rigidity results. Coarse equivalences between metrically complete Euclidean buildings preserve spherical buildings at infinity. If all irreducible factors have dimension at least two, then coarsely equivalent Euclidean buildings are isometric (up to scaling factors); if in addition none of the irreducible factors is a Euclidean cone, then the isometry is unique and has finite distance from the coarse equivalence. |
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Keywords: | Metric geometry Quasi-isometric rigidity Euclidean buildings Trees Bruhat&ndash Tits buildings |
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