Split BN-pairs of finite Morley rank

Annals of Pure and Applied Logic 119 (1-3):239-264 (2003)
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Abstract

Let G be a simple group of finite Morley rank with a definable BN-pair of rank 2 where B=UT for T=B ∩ N and U a normal subgroup of B with Z≠1. By [9] 853) the Weyl group W=N/T has cardinality 2n with n=3,4,6,8 or 12. We prove here:Theorem 1. If n=3, then G is interpretably isomorphic to PSL3 for some algebraically closed field K.Theorem 2. Suppose Z contains some B-minimal subgroup AZ with RMRM for both parabolic subgroups P1 and P2. Then n=3,4 or 6 and G is interpretably isomorphic to PSL3, PSp4 or G2 for some algebraically closed field K.Theorem 3. If U is nilpotent and n≠8, then G is interpretably isomorphic to either PSL3, PSp4 or G2 for some algebraically closed field K

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Rank 3 bingo.Alexandre Borovik & Adrien Deloro - 2016 - Journal of Symbolic Logic 81 (4):1451-1480.

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