Complete Classification of Flag-Transitive Point一Primitive0 c) [8 x9 ^% [. y3 H
2-Designs with Socle # O$ R- x! `5 l+ J+ Y# }3 j) {* {9 K0 J' N4 C% p& r: D
In recent years several authors have determined some 2-designs with flag-transitive point-primitive automorphism group G of almost simple type with sporadic socle. Here we obtain the complete classification of flag-transitive point-primitive non-trivial 2-designs with socle Mli,and find that there are precisely 14 such nonisomorphic 2-designs. 9 b5 [" ^, h2 w" c) d; O3 G6 T$ n3 M% \* ~ u8 K# `* H Keywords 2-design; flag-transitive; point-primitive; Mathieu group9 y8 ^8 W) v9 g+ n" [( k$ o! C
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