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Cyclotomic numbers and primitive idempotents in the ring GF(q)[x]/(x~(p~n) -1)

机译:环GF(q)[x] /(x〜(p〜n)-1)中的环数和本原幂等

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摘要

Let q be an odd prime power and p be an odd prime with gcd(p, q) = 1. Let order of q modulo p be f, gcd((p-1)/f,q) = 1 and q~f = 1 + pλ Here expressions for all the primitive idempotents in the ring R_(p~n) = GF(q)[x]/(x~(p~n) — 1), for any positive integer n, are obtained in terms of cyclotomic numbers, provided p does not divide λ if n ≥ 2. The dimension, generating polynomials and minimum distances of minimal cyclic codes of length p~n over GF(q) are also discussed.
机译:令q为gcd(p,q)= 1的奇质数幂,p为奇数质数。令q模p的阶数为f,gcd((p-1)/ f,q)= 1且q〜f = 1 +pλ这里,对于任何正整数n,都可以得到环R_(p〜n)= GF(q)[x] /(x〜(p〜n)_1)中所有本原幂等式的表达式如果n≥2,则p不能除以λ。

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