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Covers of Point-Hyperplane Graphs |
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| Authors: | Arjeh?M.?Cohen mailto:a.m.cohen@tue.nl" title=" a.m.cohen@tue.nl" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,E.?J.?Postma |
| Affiliation: | (1) Department of Mathematics and Computer Science, Technische Universiteit Eindhoven, Den Dolech 2, Eindhoven, The Netherlands |
| Abstract: | A cover of the non-incident point-hyperplane graph of projective dimension 3 for fields of characteristic 2 is constructed. For fields  of even order larger than 2, this leads to an elementary construction of the non-split extension of SL4(  )by  6. |
| Keywords: | group extension graph cover special linear group projective geometry |
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