How many equivalence classes does this have? {(x,y)|x^2 = y^2 mod 9}
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Originally Posted by colombianita2089 How many equivalence classes does this have?{(x,y)|x^2 = y^2 mod 9} Let's be clear on some points. Is this a relation on the integers? Are you saying that (-4,14) would belongs to the relation?
its a relation on N {0,1,2.....}
Originally Posted by colombianita2089 its a relation on N {0,1,2.....} Well how many remainder classes modulo nine for are there?
Last edited by Plato; Oct 26th 2009 at 03:25 PM.
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