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Title
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On the geometry of O'N
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Author
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Dimitri Leemans
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Abstract
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We classify the rank two BCDL_{2003}-geometries of O'Nan and show that the maximal rank of a BCDL_{2003}-geometry for O'Nan is 4.
This bound is sharp since it is satisfied by the rank four geometry given by Buekenhout in 1985.
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