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Affine groups and flag-transitive triplanes

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Abstract

Let \(\mathcal{D}\) be a nontrivial 2-(v, k, 3) symmetric design (triplane) and let G ⩽ Aut(\(\mathcal{D}\)) be flag-transitive and point-primitive. In this paper, we prove that if G is an affine group, then GAΓL 1(q), where q is some power of a prime p and p ⩾ 5.

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References

  1. Aschbacher M. On the maximal subgroups of the finite classical groups. Invent Math, 1984, 76: 469–514

    Article  MathSciNet  MATH  Google Scholar 

  2. Buekenhout F, Delandtsheer A, Doyen J. Finite linear spaces with flag-transitive automorphism groups. J Combin Theory Ser A, 1988, 49: 268–293

    Article  MathSciNet  MATH  Google Scholar 

  3. Buekenhout F, Leemans D. On the list of finite primitive permutation groups of degree ⩽ 50. J Symbolic Computation, 1996, 22: 215–225

    Article  MathSciNet  MATH  Google Scholar 

  4. Burkhardt R. Der Zerlegungsmatrizen der PSL(2, p f). J Algebra, 1976, 40: 75–96

    Article  MathSciNet  MATH  Google Scholar 

  5. Conway J H, Curtis R T, Norton S P, et al. Atlas of Finite Groups. London: Oxford University Press, 1985

    MATH  Google Scholar 

  6. Cooperstein B N. Minimal degree for a permutation representation of a classical group. Israel J Math, 1978, 30: 213–235

    Article  MathSciNet  MATH  Google Scholar 

  7. The GAP Group, GAP — Groups, Algorithms, and Programming, Version 4.4; 2005, http://www.gap-system.org

  8. James G D. On the minimal dimensions of irreducible representations of symmetric groups. Math Proc Cambridge Philos Soc, 1983, 94: 417–424

    Article  MathSciNet  MATH  Google Scholar 

  9. Jansen C, Lux K, Parker R A, et al. An Atlas of Brauer Characters. In: London Math Soc Monographs, New Series 11. Oxford: Oxford University Press, 1995

    MATH  Google Scholar 

  10. Kantor W M. Classification of 2-transitive symmetric designs. Graphs Combin, 1985, 1: 165–166

    Article  MathSciNet  MATH  Google Scholar 

  11. Kleidman P B, Liebeck M W. The subgroups structure of the finite classical groups. London Math Soc Lecture Note Series, vol. 129. Cambridge: Cambridge University Press, 1990

    Book  Google Scholar 

  12. Landazuri V, Seitz G M. On the minimal degrees of projective representations of the finite Chevalley groups. J Algebra, 1974, 32: 418–443

    Article  MathSciNet  MATH  Google Scholar 

  13. Liebeck M W. On the orders of maximal subgroups of the finite classical groups. Proc London Math Soc, 1985, 50: 442–446

    Article  MathSciNet  Google Scholar 

  14. Liebeck M W. The affine permutation groups of rank 3. Proc London Math Soc, 1987, 54: 477–516

    Article  MathSciNet  MATH  Google Scholar 

  15. Liebeck M W. The classification of finite linear spaces with flag-transitive automorphism groups of affine type. J Combin Theory Ser A, 1998, 84: 196–235

    Article  MathSciNet  MATH  Google Scholar 

  16. Liebeck M W, Praeger C E, Saxl J. The maximal factorizations of the finite simple groups and their automorphism groups. In: Mem Amer Math Soc, vol. 86. Providence, RI: Amer Math Soc, 1990

    Google Scholar 

  17. Liebeck M W, Praeger C E, Saxl J. Affine distance-transitive groups with alternating or symmetric point stabiliser. European J Combin, 1992, 13: 489–501

    Article  MathSciNet  MATH  Google Scholar 

  18. Lübeck F. Small degree representations of finite Chevalley groups in defining characteristic. LMS J Comput Math, 2001, 4: 135–169

    MathSciNet  MATH  Google Scholar 

  19. O’Reilly-Regueiro E. On primitivity and reduction for flag-transitive symmetric designs. J Combin Theory Ser A, 2005, 109: 135–148

    Article  MathSciNet  MATH  Google Scholar 

  20. O’Reilly-Regueiro E. Flag-transitive symmetric designs. PhD Thesis, University of London, 2003

  21. Praeger C E. The flag-transitive symmetric designs with 45 points, blocks of size 12, and 3 blocks on every point pair. Des Codes Cryptor, 2007, 44: 115–132

    Article  MathSciNet  MATH  Google Scholar 

  22. Praeger C E, Zhou S L. Imprimitive flag-transitive symmetric designs. J Combin Theory Ser A, 2006, 113: 1381–1395

    Article  MathSciNet  MATH  Google Scholar 

  23. Skinner C. The diophantine equation x 2 = 4q n − 4q + 1. Pacific J Math, 1989, 139: 303–309

    Article  MathSciNet  MATH  Google Scholar 

  24. Wagner A. An observation on the degrees of projective representations of the symmetric and alternating groups over an arbitrary field. Arch Math, 1977, 29: 583–589

    Article  MATH  Google Scholar 

  25. Zhou S L, Dong H L. Sporadic groups and flag-transitive triplanes. Sci China Ser A, 2009, 52: 394–400

    Article  MathSciNet  MATH  Google Scholar 

  26. Zhou S L, Dong H L. Exceptional groups of Lie type and flag-transitive triplanes. Sci China Math, 2010, 53: 447–456

    Article  MathSciNet  MATH  Google Scholar 

  27. Zhou S L, Dong H L. Alternating groups and flag-transitive triplanes. Des Codes Cryptogr, 2010, 57: 117–126

    Article  MathSciNet  MATH  Google Scholar 

  28. Zhou S L, Dong H L, Fang W D. Finite classical groups and flag-transitive triplanes. Discret Math, 2009, 309: 5183–5195

    Article  MathSciNet  MATH  Google Scholar 

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Correspondence to ShengLin Zhou.

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Dong, H., Zhou, S. Affine groups and flag-transitive triplanes. Sci. China Math. 55, 2557–2578 (2012). https://doi.org/10.1007/s11425-012-4476-x

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