Iwasawa theory;
Z(2)-extension;
Real biquadratic field;
2-Class group;
Class field theory;
Units;
IDEALS;
D O I:
10.1007/s10998-023-00560-3
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
In this paper, we give the structure of the Iwasawa module X = X(k(infinity))of the Z(2)-extensionof infinitely many real biquadratic fields k. Denote by lambda, mu and nu the Iwasawa invariants of the cyclotomic Z(2)-extension of k. Then lambda = mu = 0 and nu = 2.
机构:
Univ Roma La Sapienza, Dipartimento Matemat, Piazzale Aldo Moro 5, I-00185 Rome, ItalyUniv Roma La Sapienza, Dipartimento Matemat, Piazzale Aldo Moro 5, I-00185 Rome, Italy
机构:
Univ Tokyo, Grad Sch Math Sci, Meguro Ku, 3-8-1 Komaba, Tokyo 1538914, JapanUniv Tokyo, Grad Sch Math Sci, Meguro Ku, 3-8-1 Komaba, Tokyo 1538914, Japan