Skip to main content
Log in

Finitely generated subgroups of free profinite groups and of some Galois groups

  • Published:
Mathematical Notes Aims and scope Submit manuscript

Abstract

It is proved that, for a (closed) subgroupH of a free profinite or free prosolvable groupF of rankF>1 such thatH contains a nontrivial composition subgroupN ofF, we have rankF<∞ and [F:H]<∞.

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. A. Karrass and D. Solitar, “On finitely generated subgroups of a free group,”Proc. Amer. Math. Soc.,22, No. 1, 209–213 (1969).

    MathSciNet  Google Scholar 

  2. O. V. Mel'nikov, “Characterization of accessible subgroups of free profinite groups,”Dokl. Akad. Nauk BSSR,22, No. 8, 677–680 (1978).

    MATH  MathSciNet  Google Scholar 

  3. O. V. Mel'nikov, “Normal divisors of free profinite groups,”Izv. Akad. Nauk SSSR Ser. Mat. [Math. USSR-Izv.],42, No. 1, 3–25 (1978).

    MATH  MathSciNet  Google Scholar 

  4. A. Lubotzky, “Combinatorial group theory for pro-p-groups,”J. Pure Appl. Algebra,25, 311–325 (1982).

    Article  MATH  MathSciNet  Google Scholar 

  5. K. Hoechsmann, “Zum Einbettungsproblem,”J. Reine Angew. Math.,229, 81–106 (1968).

    MATH  MathSciNet  Google Scholar 

  6. K. Uchida, “Separably Hilbertian fields,”Kodai Math. J.,3, No. 1, 83–95 (1980).

    MATH  MathSciNet  Google Scholar 

  7. M. D. Fried and M. Jarden,Field Arithmetic, Springer, Berlin (1986).

    Google Scholar 

  8. W. Kuyk, “Extensions de corps hilbertiens,”J. Algebra,14, No. 1, 112–124 (1970).

    MATH  MathSciNet  Google Scholar 

  9. E. Binz, J. Neukirch, and G. H. Wenzel, “A subgroup theorem for free products of profinite groups,”J. Algebra,19, No. 1, 104–109 (1971).

    MathSciNet  Google Scholar 

  10. W. Gaschütz, “Zu einem von B. H. und H. Neumann gestellten Problem,”Math. Nachr.,14, No. 4–6, 249–252 (1955).

    MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Translated fromMatematicheskie Zametki, Vol. 64, No. 1, pp. 95–106, July, 1998.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Mel'nikov, O.V. Finitely generated subgroups of free profinite groups and of some Galois groups. Math Notes 64, 82–91 (1998). https://doi.org/10.1007/BF02307198

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02307198

Key words

Navigation