Journal of Number TheoryVolume 34, Issue 3, March 1990, Pages 346-361Unit indices of imaginary abelian number fields of type (2, 2, 2)Author links open overlay panelMikihito Hirabayashi, Ken-ichi YoshinoShow moreShareCitehttps://doi.org/10.1016/0022-314X(90)90141-DGet rights and contentUnder an Elsevier user licenseopen archiveAbstractLet K be an imaginary abelian number field of type (2, 2, 2). We give a criterion which determines the unit index of K by using the fundamental units of the real quadratic subfields of K.Previous article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1990 Published by Elsevier Inc.