Torsion-free modules over reduced Witt rings

[摘要] We compute the genus class group of a torsion-free module over a reduced Witt ring of finite stability index. This is applied to modules locally isomorphic to odd degree extensions of formally real fields. (C) 2000 Academic Press.

[发布日期] 2000-09-15

[关键词] Witt ring;module;Pythagorean field