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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- Dec 17th 2008, 03:12 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? - Dec 17th 2008, 03:26 PMByun
- Dec 17th 2008, 03:30 PManlys
- Dec 17th 2008, 04:17 PMNonCommAlg