Adele ring

In mathematics the adele ring is defined in class field theory, a branch of (algebraic) number theory. It allows one to elegantly describe the Artin reciprocity law. The adele ring is a self-dual topological ring, which is built on a global field. It is the restricted product of all the completions of the global field and therefore contains all the completions of the global field. The , which is the quotient group of the group of units of the adele ring by the group of units of the global field, is a central object in class field theory. Notation: During the whole article, for a place of or and

Adele ring

In mathematics the adele ring is defined in class field theory, a branch of (algebraic) number theory. It allows one to elegantly describe the Artin reciprocity law. The adele ring is a self-dual topological ring, which is built on a global field. It is the restricted product of all the completions of the global field and therefore contains all the completions of the global field. The , which is the quotient group of the group of units of the adele ring by the group of units of the global field, is a central object in class field theory. Notation: During the whole article, for a place of or and