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Archiv der Mathematik

, Volume 43, Issue 5, pp 385–387 | Cite as

Grushko's theorem

  • Wilfried Imrich
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References

  1. [1]
    I. A. Grushko, Über die Basen eines freien Produktes von Gruppen. Math. Sb.8, 169–182 (1940).Google Scholar
  2. [2]
    P. J. Higgins, Grushko's theorem. J. Algebra4, 365–372 (1966).Google Scholar
  3. [3]
    W. Imrich, Subgroup theorems and graphs. Combinatorial Mathematics V, LNM622, 1–27, Berlin-Heidelberg-New York 1977.Google Scholar
  4. [4]
    B. H. Neumann, On the number of generators of a free product. J. London Math. Soc.18, 12–20 (1943).Google Scholar
  5. [5]
    J. R. Stallings, A topological proof of Grushko's theorem on free products. Math. Z.90, 1–8 (1965).Google Scholar
  6. [6]
    D. H. Wagner, On free products of groups. Trans. Amer. Math. Soc.84, 352–378 (1957).Google Scholar

Copyright information

© Birkhäuser Verlag 1984

Authors and Affiliations

  • Wilfried Imrich
    • 1
  1. 1.Institut für Mathematik und Angewandte GeometrieMontanuniversitätLeoben

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