Abstract
The universal 2-cover of theP-geometry related to the Baby Monster sporadic simple groupBM is shown to admit a non-split extension 34371·BM as a flag-transitive automorphism group. This new geometry completes the list of flag-transitiveP-geometries.
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Dedicated to Prof. J. Thompson
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Ivanov, A.A., Shpectorov, S.V. The last flag-transitiveP-geometry. Israel J. Math. 82, 341–362 (1993). https://doi.org/10.1007/BF02808117
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DOI: https://doi.org/10.1007/BF02808117