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arXiv 1407.6409math.NT
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关于$\mathbb{G}_{m}$的zeta元素

On zeta elements for $\mathbb{G}_{m}$

David Burns, Masato Kurihara, Takamichi Sano

摘要:

本文给出了交换斯塔克图一般理论的一种统一方法。要做到这一点,我们定义自然的概念“zeta元素”,“韦伊平展上同调复合物”和“积分塞尔默群”的乘法群$\mathbb{G}_m$在有限的阿贝尔扩展数域。然后,我们猜想zeta元与Weil-平展上同调复形之间的一个精确联系,我们证明了这个猜想等价于等变Tamagawa数猜想的一个特例,并给出了整体函数域上类似命题的一个无条件证明.我们还证明了该猜想包含了关于广义Stark元的算术性质的许多详细信息,包括Rubin-Stark元之间的一类新的积分同余关系(这是最近的Mazur和Rubin和第三作者)和明确的公式,在这些元素的更高的拟合理想的整塞尔默群的$\mathbb{G}_m$,从而获得了阿贝尔斯塔克图理论的一个清晰而又非常一般的方法。作为这种方法的第一个应用程序,我们得到,除其他事项外,证明Darmon关于分圆单位的一个猜想(的一个改进),在基域是$\mathbb{Q}$的情况下格罗斯的“环面猜想”(的改进),在相关的$p$ -adic $L$ -函数具有平凡零的情况下等变玉川数猜想的新情况的证明,明确的公式为两个零化元素,并在某些情况下,较高的拟合理想(因此明确的结构)的理想类群,重新解释的$p$ -进格罗斯-斯塔克猜想的zeta元素的性质和一个强大的改进许多以前的结果(几个作者)有关阿贝尔斯塔克猜想。

英文摘要:

In this paper, we present a unifying approach to the general theory of abelian Stark conjectures. To do so we define natural notions of `zeta element', of `Weil-étale cohomology complexes' and of `integral Selmer groups' for the multiplicative group $\mathbb{G}_m$ over finite abelian extensions of number fields. We then conjecture a precise connection between zeta elements and Weil-étale cohomology complexes, we show this conjecture is equivalent to a special case of the equivariant Tamagawa number conjecture and we give an unconditional proof of the analogous statement for global function fields. We also show that the conjecture entails much detailed information about the arithmetic properties of generalized Stark elements including a new family of integral congruence relations between Rubin-Stark elements (that refines recent conjectures of Mazur and Rubin and of the third author) and explicit formulas in terms of these elements for the higher Fitting ideals of the integral Selmer groups of $\mathbb{G}_m$, thereby obtaining a clear and very general approach to the theory of abelian Stark conjectures. As first applications of this approach, we derive, amongst other things, a proof of (a refinement of) a conjecture of Darmon concerning cyclotomic units, a proof of (a refinement of) Gross's `Conjecture for Tori' in the case that the base field is $\mathbb{Q}$, a proof of new cases of the equivariant Tamagawa number conjecture in situations in which the relevant $p$-adic $L$-functions have trivial zeroes, explicit conjectural formulas for both annihilating elements and, in certain cases, the higher Fitting ideals (and hence explicit structures) of ideal class groups, a reinterpretation of the $p$-adic Gross-Stark Conjecture in terms of the properties of zeta elements and a strong refinement of many previous results (of several authors) concerning abelian Stark conjectures.

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