Let m be a fifth power free integer greater than one. Let K be an algebraic number field generated by a fifth root of m over the rational number field. If m has a prime factor p congruent to -1 modulo five, the class number of K is a multiple of five. (C) 2015 Elsevier Inc. All rights reserved.
机构:
Kangwon Natl Univ, Dept Math Educ, Chunchon 24341, Gangwon Do, South KoreaKangwon Natl Univ, Dept Math Educ, Chunchon 24341, Gangwon Do, South Korea