Let c be in a ring R and let I = {rc | r is in R}

Give an example to show that if R is not a commutative ring, then I need not be an ideal.

Can someone help me this?

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- December 17th 2008, 04:12 PManlysIdeals in a ring
Let c be in a ring R and let I = {rc | r is in R}

Give an example to show that if R is not a commutative ring, then I need not be an ideal.

Can someone help me this? - December 17th 2008, 04:26 PMByun
- December 17th 2008, 04:30 PManlys
- December 17th 2008, 05:17 PMNonCommAlg