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arXiv 1302.6097math.NT
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关于移位艾森斯坦多项式

On Shifted Eisenstein Polynomials

Randell Heyman, Igor E. Shparlinski

摘要:

研究了整系数整系数多项式经变量加性移位后成为艾森斯坦多项式的情形。我们称这种多项式为移位的艾森斯坦多项式。我们确定了一个上限的最大移位,需要给定一个移位的爱森斯坦多项式,并提供了一个下界的密度移位艾森斯坦多项式,这是严格大于经典的艾森斯坦多项式的密度。我们还表明,不可约度$n$多项式,不移位艾森斯坦多项式的数量是无限的。最后给出了移位艾森斯坦多项式的密度的一些数值结果。

英文摘要:

We study polynomials with integer coefficients which become Eisenstein polynomials after the additive shift of a variable. We call such polynomials shifted Eisenstein polynomials. We determine an upper bound on the maximum shift that is needed given a shifted Eisenstein polynomial and also provide a lower bound on the density of shifted Eisenstein polynomials, which is strictly greater than the density of classical Eisenstein polynomials. We also show that the number of irreducible degree $n$ polynomials that are not shifted Eisenstein polynomials is infinite. We conclude with some numerical results on the densities of shifted Eisenstein polynomials.

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