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October 6th, 2011, 04:48 AM  #1 
Newbie Joined: Oct 2011 Posts: 3 Thanks: 0  Show that every element of G can be written as such?
Given the set of all integers Z (pos, neg, zero), Let G be the set of onto functions T: Z > Z such that for all m,n in Z we have T(m)  T(n) = m  n. Let M, F be elements of G given by M(k) = k +1 and F(n) = n. Show that every element of G can be written as M^n or M^(n)F where n can be any integer. Do this by letting n = T(0) and epsilon = T(1)  n. Show that epsilon must be +/1, and prove that if epsilon = 1, T = M^n, if epsilon = 1, then T = MF. 

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