On additive groups of associative and commutative rings

  • R.R. Andruszkiewicz
  • M. Woronowicz
Keywords: Additive groups of rings, abelian groups.


The characterization of (A)CR-groups studied by Shalom Feigelstock [`Additive groups of commutative rings', Quaest. Math. 23 (2000), 241-245] is complemented. In particular, the theorem characterizing mixed ACR-groups is proved and numerous new examples of (A)CR-group are given. Abelian groups A such that any ring with the additive group A is associative and commutative are partially described. Some new results for torsion-free and mixed TI-groups are obtained.

Mathematics Subject Classication (2010): Primary 20K99; Secondary 13A15.

Key words: Additive groups of rings, abelian groups.


Journal Identifiers

eISSN: 1727-933X
print ISSN: 1607-3606