Kuniaki Horie

Ideal Class Groups of Iwasawa-Theoretical Abelian Extensions Over the Rational Field

The ideal class group of the basic

\mathbf Z_p

-extension over an imaginary quadratic field

The narrow class groups of some Zp-extensions over the rationals

CERTAIN PRIMARY COMPONENTS OF THE IDEAL CLASS GROUP OF THE

\\boldsymbol{Z}_p

-EXTENSION OVER THE RATIONALS

Triviality in ideal class groups of Iwasawa-theoretical abelian number fields

The narrow class groups of the ℤ17- and ℤ19-extensions over the rational field