When is the center of a ring Z(R) an ideal of R?
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Originally Posted by olgaviolet When is the center of a ring Z(R) an ideal of R? It's only an ideal when since , or are you talking about non-unital rings?
We havent learned about non-unital rings. I am not sure what they are.
non-unital rings are rings that do not possess a mutliplicative identity element. an example is the ring 2Z.
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