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Title
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On a rank five geometry of Meixner for the Mathieu
Group M(12)
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Author
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Dimitri Leemans
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Reference
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Geom. Dedicata 85(2001), nr. 1/3, 273-281.
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Math. Reviews
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2002f:51021
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Zentralblatt
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0989.51007
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Abstract
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We construct a rank five residually connected and firm geometry on which the Mathieu group M(12) acts flag-transitively and residually weakly primitively. The geometry has diagram c.c.c*.c* and orders 1,1,3,1,1.
As a corollary, we get that the RWPRI+(IP)_2 rank of M(12) is five.
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