Polynomials | Number theory | Algebra

Cyclotomic polynomial

In mathematics, the nth cyclotomic polynomial, for any positive integer n, is the unique irreducible polynomial with integer coefficients that is a divisor of and is not a divisor of for any k < n. Its roots are all nth primitive roots of unity , where k runs over the positive integers not greater than n and coprime to n (and i is the imaginary unit). In other words, the nth cyclotomic polynomial is equal to It may also be defined as the monic polynomial with integer coefficients that is the minimal polynomial over the field of the rational numbers of any primitive nth-root of unity ( is an example of such a root). An important relation linking cyclotomic polynomials and primitive roots of unity is showing that x is a root of if and only if it is a d th primitive root of unity for some d that divides n. (Wikipedia).

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Related pages

Disquisitiones Arithmeticae | Integer factorization | If and only if | Bunyakovsky conjecture | Coefficient | Finite field | Primitive root modulo n | PARI/GP | Fermat's little theorem | Minimal polynomial (field theory) | Dirichlet's theorem on arithmetic progressions | Root of unity | Carl Friedrich Gauss | Congruence relation | Euler's totient function | Rational number | Reciprocal polynomial | Möbius inversion formula | Resultant | Imaginary unit | Periodic function | Aurifeuillean factorization | Cyclotomic field | Discriminant | Multiplicative order | Maple (software) | Monic polynomial | Coprime integers | Mathematics | Field (mathematics) | Root of a function | Divisor | Möbius function | Ring (mathematics) | Prime power | SageMath | Eisenstein's criterion | Prime number | Irreducible polynomial | Hensel's lemma | Zsigmondy's theorem | Radical of an integer