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Continue to ChatThe Minimal Polynomials of 2cos(pi/2k) over the Rationals - https://avesis.uludag.edu.tr/yayin/bcf83f0b-f401-463b-9bb7-b2998bb886d3/the-minimal-polynomials-of-2cospi-2k-over-the-rationals
The Minimal Polynomials of 2cos(pi/2k) over the Rationals - https://avesis.uludag.edu.tr/yayin/bcf83f0b-f401-463b-9bb7-b2998bb886d3/the-minimal-polynomials-of-2cospi-2k-over-the-rationals