Let $E$ be an algebraic extension of a global field $E_{0}$ with a nontrivialBrauer group Br$(E)$, and let $P(E)$ be the set of those prime numbers $p$, forwhich $E$ does not equal its maximal $p$-extension $E(p)$. This paper showsthat $E$ admits one-dimensional local class field theory if and only if thereexists a system $V(E) = \{v(p)\colon \ p \in P(E)\}$ of (nontrivial) absolutevalues, such that $E(p) \otimes_{E} E_{v(p)}$ is a field, where $E_{v(p)}$ isthe completion of $E$ with respect to $v(p)$. When this occurs, we determine by$V(E)$ the norm groups of finite extensions of $E$, and the structure ofBr$(E)$. It is also proved that if $P$ is a nonempty set of prime numbers and$\{w(p)\colon \ p \in P\}$ is a system of absolute values of $E_{0}$, then onecan find a field $K$ algebraic over $E_{0}$ with such a theory, so that $P(K) =P$ and the element $\kappa (p) \in V(K)$ extends $w(p)$, for each $p \in P$.
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机译:设$ E $为具有非平凡的Brauer群Br $(E)$的全局字段$ E_ {0} $的代数扩展,令$ P(E)$为素数$ p $的集合,为此, E $不等于其最大$ p $扩展名$ E(p)$。本文表明,当且仅当存在(非平凡的)P(E)\} $中的系统$ V(E)= \ {v(p)\ colon \ p \ in $(E)时,$ E $才接受一维局部类场论绝对值,例如$ E(p)\ otimes_ {E} E_ {v(p)} $是一个字段,其中$ E_ {v(p)} $是相对于$ v(p)的$ E $的完成$。发生这种情况时,我们用$ V(E)$来确定$ E $的有限扩展的范数组以及Br $(E)$的结构。还证明了,如果$ P $是素数的非空集合,而$ \ {w(p)\ colon \ p \ in P \} $是一个绝对值$ E_ {0} $的系统,则可以用这样的理论在$ E_ {0} $上找到字段$ K $代数,使得$ P(K)= P $且元素$ \ kappa(p)\ inV(K)$扩展$ w(p )$,每个P $中的$ p \。
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