Skip to main content
Log in

Thompson’s conjecture for Lie type groups E 7(q)

  • Articles
  • Published:
Science China Mathematics Aims and scope Submit manuscript

Abstract

In this article, we prove a conjecture of Thompson for an infinite class of simple groups of Lie type E 7(q). More precisely, we show that every finite group G with the properties Z(G) = 1 and cs(G) = cs(E 7(q)) is necessarily isomorphic to E 7(q), where cs(G) and Z(G) are the set of lengths of conjugacy classes of G and the center of G respectively.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. Ahanjideh N. On Thompson’s conjecture for some finite simple groups. J Algebra, 2011, 344: 205–228

    Article  MATH  MathSciNet  Google Scholar 

  2. Bi J X. A quantitative property of the length of the conjugacy classes of finite simple groups (in Chinese). J Liaoning University, 2008, 35: 5–6

    MathSciNet  Google Scholar 

  3. Carter R W. Finite Groups of Lie Type, Conjugacy Classes and Complex Characters. New York: Wiley, 1985

    MATH  Google Scholar 

  4. Chen G Y. On Thompson’s conjecture. J Algebra, 1996, 185: 185–193

    Google Scholar 

  5. Chen G Y. Further reflections on Thompson’s conjecture. J Algebra, 1999, 218: 276–285

    Article  MATH  MathSciNet  Google Scholar 

  6. Chillag D, Herzog M. On the length of the conjugacy classes of finite groups. J Algebra, 1990, 131: 110–125

    Article  MATH  MathSciNet  Google Scholar 

  7. Conway J H, Curtis R T, Norton S P, et al. An Atlas of Finite Groups. Oxford-New York: Oxford University Press, 1985

    Google Scholar 

  8. Deriziotis D I, Fakiolas A P. The maximal tori in the finite Chevalley groups of type E 6, E 7 and E 8. CommunAlgebra, 1991, 19: 889–903

    MATH  MathSciNet  Google Scholar 

  9. Feit W. On large Zsigmondy primes. Proc Amer Math Soc, 1988, 102: 29–33

    Article  MATH  MathSciNet  Google Scholar 

  10. Fleischmann P, Janiszczak I. The simisimple conjugacy classes of finite groups of Lie type E 6 and E 7. Commun Algebra, 1993, 21: 93–161

    Article  MATH  MathSciNet  Google Scholar 

  11. Howlett R B, Rylands L J, Taylor D E. Matrix generators for exceptional groups of Lie type. J Symb Comput, 2001, 31: 429–445

    Article  MATH  MathSciNet  Google Scholar 

  12. Kimmerle W, Lyons R, Sanding R, et al. Composition factors from the group ring and Artin’s theorem on orders of simple groups. Proc London Math Soc, 1990, 60: 89–122

    Article  MATH  MathSciNet  Google Scholar 

  13. Kleidman P B, Liebeck M W. The Subgroup Structure of Finite Classical Groups. Cambridge: Cambridge University Press, 1990

    Book  MATH  Google Scholar 

  14. Kondrat’ev A S. On prime graph components of finite groups. Mat Sb, 1989, 180: 787–797

    MATH  Google Scholar 

  15. Li X H. Characterization of the finite simple groups. J Algebra, 2001, 254: 620–649

    Google Scholar 

  16. Mazurov V D, Khukhro E I, Eds. The Kourovka Notebook, Unsolved Problems in Group Theory, 17th edition. Russian Academy of Sciences Siberian Division, Institute of Mathematics, Novosibirsk, 2010

    Google Scholar 

  17. Steinberg R. Generators for simple groups. Canad J Math, 1962, 14: 277–283

    Article  MATH  MathSciNet  Google Scholar 

  18. Thompson J G. A communication to W.J. Shi. 1988

    Google Scholar 

  19. Vasil’ev A V, Vdovin E P. An adjacency criterion for the prime graph of a finite simple group. Algebra Logic, 2005, 44: 381–406

    Article  MathSciNet  Google Scholar 

  20. Vasil’ev A V, Vdovin E P. Cocliques of maximal size in the prime graph of a finite simple group. Algebra Logic, 2012, 50: 291–322

    Article  MathSciNet  Google Scholar 

  21. Vasil’ev A V. On Thompson’s conjecture. Sib Elektron Mat Izv, 2009, 6: 457–464

    MathSciNet  Google Scholar 

  22. Williams J S. Prime graph components of finite groups. J Algebra, 1981, 69: 489–513

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to WuJie Shi.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Xu, M., Shi, W. Thompson’s conjecture for Lie type groups E 7(q). Sci. China Math. 57, 499–514 (2014). https://doi.org/10.1007/s11425-013-4663-4

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11425-013-4663-4

Keywords

MSC(2010)

Navigation