1. The problem statement, all variables and given/known data prove for the dieudonne criterion on univalent polynomials. polyn. of degree n is univalent in the open disk iff sum(k=1 --> n) a_k sin(kt)/sint z^(k-1) is not 0 in open unit disk, given 0 < t < pi/2 2. Relevant equations hint: Polyn. univ iff [p(ze^it) - p(ze^-it)]/z(e^it - e^-it) =/= 0 in open unit disk 3. The attempt at a solution all failed attempts. need a hint to begin, thank you all is appreciated.