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posted by  coolda on 7/13/2009 3:39:19 AM  |  status: Closed  |  Earned Karma: 25

Lifesaver-Urgent Help!! equivalence relations!

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Prove which of the following are equivalence relations:

a.) On a set Y define the relation R by aRb for all a,bX.

b.) On a set F we have the equivalence relations Ra, and Rb. Define a relation Rc by xRcy if and only if xR1y and xR2y. If this is an equivalence relation, then find: [x]Rc in terms of [x]Ra and [x]Rb.
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posted by lawrence_tutor on 7/13/2009 8:02:13 AM  |  status: Live
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posted by George Pappas on 7/13/2009 5:27:35 PM  |  status: Live
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