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Math Help - rings commutative with 1 - what does this mean?

  1. #1
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    rings commutative with 1 - what does this mean?

    question's in the title - pretty simple I guess.. what does this mean? and also 'In each ring describe the units and non-zero elements.'

    Many Thanks
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  2. #2
    MHF Contributor kalagota's Avatar
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    Quote Originally Posted by James0502 View Post
    question's in the title - pretty simple I guess.. what does this mean? and also 'In each ring describe the units and non-zero elements.'

    Many Thanks
    first, it must be a ring, then, the multiplication operator is commutative and lastly, it contains (an element) the unity 1 which has a property that for any element r in the ring, r\cdot 1 = r = 1\cdot r
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