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ON SI-GROUPS
- Part of
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- Journal:
- Bulletin of the Australian Mathematical Society / Volume 91 / Issue 1 / February 2015
- Published online by Cambridge University Press:
- 12 September 2014, pp. 92-103
- Print publication:
- February 2015
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This paper presents new results concerning the structure of
$\text{SI}$-groups and refines and purifies the results obtained in this field by Shalom Feigelstock [‘Additive groups of rings whose subrings are ideals’, Bull. Aust. Math. Soc.55 (1997), 477–481]. The structure theorem describing torsion-free 
$\text{SI}$-groups is proved in the associative case. Numerous examples of 
$\text{SI}$-groups are given. Some inconsistencies in Feigelstock’s article are noted and corrected.
ON THE ASPHERICITY OF LENGTH-6 RELATIVE PRESENTATIONS WITH TORSION-FREE COEFFICIENTS
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- Journal:
- Proceedings of the Edinburgh Mathematical Society / Volume 51 / Issue 1 / February 2008
- Published online by Cambridge University Press:
- 04 February 2008, pp. 201-214
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