(x−αk).
(i) Show that, for every integern≥ 1, the product of all monic
irreducible polynomials overFqwhose degrees dividenis equal
toxqn
−x.
(ii) LetIq(d) denote the number of monic irreducible polynomials of
degreedinFq[x]. Show that
qn=)dIq(d) for alln∈N,
d|n
where the sum is extended over all positive divisorsdofn.
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