Class numbers of algebraic number fields of Eisenstein type,II |
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Authors: | Makoto Ishida |
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Institution: | Department of Mathematics, Tokyo Metropolitan University, Setagaya, Tokyo, Japan |
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Abstract: | Let K be an algebraic number field, of degree n, with a completely ramifying prime p, and let t be a common divisor of n and . Then it is proved that if K does not contain the unique subfield, of degree t, of the p-th cyclotomic number field, then we have (hK, n) > 1, where hK is the class number of K. As applications, we give several results on hK of such algebraic number fields K. |
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