Note on class number parity of an abelian field of prime conductor
Mathematical Journal of Ibaraki University(2018)
Abstract
Let n ≥ 1 be an integer and let 2e be the highest power of 2 dividing n. For a prime number p = 2nl + 1 with an odd prime number l, let N be the imaginary abelian field of conductor p and degree 2e+1l over Q. We show that for n ≤ 30, the relative class number hN- of N is odd when 2 is a primitive root modulo l except for the case where (n, l) = (27, 3) and p = 163 with the help of computer.
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Key words
Moduli Theory
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