Abstract
Let \(G\) be a locally compact \(\sigma \)-compact Abelian group and let \(G^{LUC}\) denote the largest semigroup compactification of \(G\). We show that for every finite group \(Q\) in \(G^*=G^{LUC}{\setminus } G\) with identity \(u\), there is a finite group \(F\) in \(G\) such that \(Q=Fu\). In particular, if \(G\) contains no nontrivial finite group, neither does \(G^{LUC}\).
Similar content being viewed by others
References
Hewitt, E., Ross, K.: Abstract Harmonic Analysis, I. Springer-Verlag, Berlin (1979)
Hindman, N., Strauss, D.: Algebra in the Stone-Čech Compactification. De Gruyter, Berlin (1998)
Protasov, I.: Finite groups in \(\beta G\). Matem. Stud. 10, 17–22 (1998)
Pym, J.: A note on \(G^{LUC}\) and Veech’s theorem. Semigroup Forum 59, 171–174 (1999)
Ruppert, W.: Compact Semitopological Semigroups: An Intrinsic Theory. Lecture Notes in Math. Springer-Verlag, Berlin (1984)
Zelenyuk, Y.: Finite groups in \(\beta \mathbb{N}\) are trivial. Semigroup Forum 55, 131–132 (1997)
Zelenyuk, Y.: Ultrafilters and Topologies on Groups. De Gruyter, Berlin (2011)
Acknowledgments
This study was supported by NRF Grant IFR2011033100072.
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by Jimmie D. Lawson.
Rights and permissions
About this article
Cite this article
Zelenyuk, Y. Finite groups in \(G^{LUC}\) . Semigroup Forum 91, 316–320 (2015). https://doi.org/10.1007/s00233-014-9652-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00233-014-9652-6