Let $n$ be an odd number. Prove that $n$ is a prime number $ \iff$ $\frac{T_n(x)}{x}$ is irreducible on $Q[x]$ We have that $ $ $T_n(x)$ is Chebyshev polynominal please help me :((
$n$ is a prime number $\iff $ $\frac{Tn(x)}{x}$ is irreducible on $Q[x]$
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polynomials
prime-numbers
irreducible-polynomials
chebyshev-polynomials
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1A Google search found [this paper](http://web.math.rochester.edu/people/faculty/doug/otherpapers/ICM-199802-0001.pdf). – 2017-01-22
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0thanks for your help, it's helped me so much – 2017-01-22