Show that if f and g are homomorphisms from Q into a ring R, Q the field of rational numbers, then if f(m) = g(m) for every integer m, f=g. Any ideas?
Last edited by mr fantastic; Apr 30th 2009 at 02:08 PM. Reason: Restored question and closed thread
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Note Thus for any QED
Last edited by Gamma; Apr 28th 2009 at 11:31 AM. Reason: TeX error
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