Timeline for Is every commutative group structure underlying at least one (unitary, commutative) ring structure
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| Jan 18, 2014 at 21:04 | comment | added | Sh.M1972 | One more point: I didn't see this problem before. Suppose $A$ is an abelian group such that it is possible to define an associative unitary ring structure on $A$. Then which elements of $A$ will be candidates for the identity element of such a ring? | |
| Jan 18, 2014 at 20:53 | history | answered | Sh.M1972 | CC BY-SA 3.0 |