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A remark on arithmetic equivalence and the normset

Jim Coykendall (2000)

Acta Arithmetica

1. Introduction. Number fields with the same zeta function are said to be arithmetically equivalent. Arithmetically equivalent fields share much of the same properties; for example, they have the same degrees, discriminants, number of both real and complex valuations, and prime decomposition laws (over ℚ). They also have isomorphic unit groups and determine the same normal closure over ℚ [6]. Strangely enough, it has been shown (for example [4], or more recently [6] and [7]) that this does...

A remark on certain simultaneous divisibility sequences

Stefan Barańczuk, Piotr Rzonsowski (2014)

Colloquium Mathematicae

We investigate possible orders of reductions of a point in the Mordell-Weil groups of certain abelian varieties and in direct products of the multiplicative group of a number field. We express the result obtained in terms of divisibility sequences.

A remark on Construire un noyau de la fonctorialité by Lafforgue

Hervé Jacquet (2012)

Annales de l’institut Fourier

Lafforgue has proposed a new approach to the principle of functoriality in a test case, namely, the case of automorphic induction from an idele class character of a quadratic extension. For technical reasons, he considers only the case of function fields and assumes the data is unramified. In this paper, we show that his method applies without these restrictions. The ground field is a number field or a function field and the data may be ramified.

A remark on product of Dirichlet L-functions

Kirti Joshi, C. S. Yogananda (1999)

Acta Arithmetica

While trying to understand the methods and the results of [3], especially in Section 2, we stumbled on an identity (*) below, which looked worth recording since we could not locate it in the literature. We would like to thank Dinesh Thakur and Dipendra Prasad for their comments.

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