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arXiv 0805.4282math.NT
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关于全实数域的Shintani射线类不变量

On Shintani's ray class invariant for totally real number fields

Shuji Yamamoto

摘要:

我们引入了一个射线类不变$X(C)$的全实数域,以下Shintani的工作在真正的二次情况。我们证明了一个分解公式$X=X_1... X_n$,其中每个$X_i=X_i(C)$对应于一个真实的地方。虽然这种分解先验地依赖于某些选择(特别是锥分解),但我们可以证明它实际上与这些选择无关。最后,我们描述了$X_i(C)$的行为时,$C$的签名在一个真实的地方被改变。这最后一个结果也被解释为一个有趣的行为的衍生$L'(0,χ)$的$L$ -功能。

英文摘要:

We introduce a ray class invariant $X(C)$ for a totally real field, following Shintani's work in the real quadratic case. We prove a factorization formula $X=X_1... X_n$ where each $X_i=X_i(C)$ corresponds to a real place. Although this factorization depends a priori on some choices (especially on a cone decomposition), we can show that it is actually independent of these choices. Finally, we describe the behavior of $X_i(C)$ when the signature of $C$ at a real place is changed. This last result is also interpreted into an interesting behavior of the derivative $L'(0,χ)$ of $L$-functions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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