Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-25T05:26:06.226Z Has data issue: false hasContentIssue false

On embeddable finite amalgams of groups

Published online by Cambridge University Press:  18 May 2009

Abdul Majeed
Affiliation:
University of the Punjab, Lahore, Pakistan
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

In this paper, a problem of B. H. Neumann and Hanna Neumann [7] about the finite embeddability of an embeddable finite amalgam is discussed. After proving a “reduction theorem” for a finite amalgam to have a finite embedding, we examine some known embeddable amalgams (cf. [3]) as regards their embeddability in a finite group. Since the existence of the generalised free product and the embeddability of an amalgam are synonymous terms, Theorem 3.1 generalises a result in [4]. A sufficient condition for an amalgam of type S to have a finite embedding is also given.

Type
Research Article
Copyright
Copyright © Glasgow Mathematical Journal Trust 1972

References

REFERENCES

1.Coxeter, H. S. M., The abstract groups Gm,n,p, Trans. Amer. Math. Soc., 45 (1939), 73150.Google Scholar
2.Coxeter, H. S. M. and Moser, J., Generators and relations for discrete groups (Springer-Verlag, 1957).CrossRefGoogle Scholar
3.Majeed, A., Permutational products of groups and embedding theory of group amalgams, M.A. Thesis presented to the Australian National University (1966).Google Scholar
4.Neumann, H., Generalised free products of groups with amalgamated subgroups I, Amer. J. Math. 70 (1948), 590625.CrossRefGoogle Scholar
5.Neumann, H., Generalised free products of groups with amalgamated subgroups II, Amer. J. Math. 71 (1949), 491540.CrossRefGoogle Scholar
6.Neumann, B. H. and Neumann, Hanna, A remark on generalised free products, J. London Math. Soc. 25 (1950), 202204.CrossRefGoogle Scholar
7.Neumann, B. H. and Neumann, Hanna, A contribution to the embedding theory of group amalgams, Proc. London Math. Soc. (3) 3 (1953), 245256.Google Scholar
8.Neumann, B. H., An essay on free products of groups with amalgamations, Philos. Trans. Roy. Soc. London, Ser. A 246 (1954), 503554.Google Scholar
9.Neumann, B. H., Permutational products of groups, J. Australian Math. Soc. 1 (1960), 299310.CrossRefGoogle Scholar