When is the center of a ring Z(R) an ideal of R?
Follow Math Help Forum on Facebook and Google+
Originally Posted by olgaviolet When is the center of a ring Z(R) an ideal of R? It's only an ideal when $\displaystyle \mathcal{Z}(R)=R$ since $\displaystyle 1\in\mathcal{Z}(R)$, or are you talking about non-unital rings?
We havent learned about non-unital rings. I am not sure what they are. thank you
non-unital rings are rings that do not possess a mutliplicative identity element. an example is the ring 2Z.
View Tag Cloud