Keiichi Komatsu

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Affiliation: Waseda University Faculty of Science and Engineering School of Fundamental Science and Engineering Professor

Weber’s class number problem in the cyclotomic ℤ2-extension of ℚ, II

Takashi Fukuda, Keiichi Komatsu

Journal de Theorie des Nombres de Bordeaux 22(2) 359 - 368 2010
Weber's Class Number Problem in the Cyclotomic Z(2)-Extension of Q

Takashi Fukuda, Keiichi Komatsu

EXPERIMENTAL MATHEMATICS 18(2) 213 - 222 2009
On the Iwasawa lamda-invariant of the cyclotomic Z_2-extension of Q(sqrt{p})

Keiichi Komatsu, Takashi Fukuda

Math. Comp. 78 1797 - 1808 2009
Iwasawa lambda-invariants and Mordell-Weil ranks of abelian varieties with complex multiplication

Takasih Fukuda, Keiichi Komatsu, Shuji Yamagata

ACTA ARITHMETICA 127(4) 305 - 307 2007
On the Iwasawa λ-invariant of the cyclotomic Z?-extension of a real quadratic field

Tokyo Journal of Mathematics Vol.28,No.1,pp.259-264 2005