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Title
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A generalization of a construction due to Van Nypelseer
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Author
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D. Leemans
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Reference |
Beitrage Algebra Geom. 46 (2005), nr. 2, 561-574.
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Abstract
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We give a construction leading to new geometries from Steiner systems or arbitrary rank two geometries.
Starting with an arbitrary rank two residually connected geometry G, we obtain firm, residually connected, (IP)_2 and flag-transitive geometries only if G is a thick linear space or a (4,3,4)-gon.
This construction is also used to produce a new firm and residually connected rank six geometry on which the Mathieu group M_24 acts flag-transitively.
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