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Topic:
n square free) ^ ( d I n and u = v (mod d) > f(u) = f(v) (mod d) ) > (f is a polynomial over Z_n)
Replies:
2
Last Post:
Oct 16, 2009 3:37 PM




n square free) ^ ( d I n and u = v (mod d) > f(u) = f(v) (mod d) ) > (f is a polynomial over Z_n)
Posted:
Oct 16, 2009 8:23 AM


How can I show that for any squarefree n and function f from Z_n to Z_n that has the propery that whenever d I n and u = v (mod d) then f (u) = f(v) (mod d)  must be a polynomial over Z_n ?



