Abstract.
¶Theorem. Suppose that the group G has an irreducible spherical BN-pair of rank 2. If for every 2-transitive subgroup L of the Levi factors of G the one-point stabilizer B splits as B = U × T with [B, B] = U, then the Tits-building associated to the BN-pair of G is Moufang.¶¶This implies in particular that a simple group G with a spherical BN-pair of rank 2 whose Levi factors are permutation equivalent to subgroups of PGL2(K) or the Suzuki group GSz(K) is (essentially) classical.
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Received: 30.7.1999
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Tent, K. Generalized polygons with split Levi factors. Arch. Math. 76, 7–11 (2001). https://doi.org/10.1007/s000130050534
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DOI: https://doi.org/10.1007/s000130050534