MATHEMATISCHE NACHRICHTEN, cilt.278, sa.6, ss.679-691, 2005 (SCI-Expanded)
Let L/F be a dihedral extension of degree 2p, where p is an odd prime. Let KIF and k/F be subextensions of L/F with degrees p and 2, respectively. Then we will study relations between the p-ranks of the class groups Cl(K) and Cl(k).