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 2020-04-13, 16:11 #6 wildrabbitt   Jul 2014 3·149 Posts Except I still don't know how it can be that if $F(x) = \prod_{R}(x - \zeta^{R})$ has a constant term, then $F(\zeta) = A_{0}(x)\eta_{0} + A_{1}(x)\eta_{1}$ as it seems to me there can't be a constant term on the right hand side of the latter. Last fiddled with by wildrabbitt on 2020-04-13 at 16:12