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arXiv 1104.3181math.NT
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局部域上多项式的单因子提升与因子分解

Single-factor lifting and factorization of polynomials over local fields

J. Guàrdia, E. Nart, S. Pauli

摘要:

设$f(x)$是局部域上的可分多项式。Montes算法计算$f(x)$的不同不可约因子的某些近似,具有很强的算术性质。在本文中,我们开发了一种算法,以改善这些近似的任何一个,直到达到规定的精度。这种“单因子提升”例程最自然的应用是将其与Montes算法结合起来,以提供快速多项式因式分解算法。此外,单因子提升算法也可以应用于加速几个全局算术问题的计算分辨率,其中需要改进多项式的单个局部不可约因子的近似。

英文摘要:

Let $f(x)$ be a separable polynomial over a local field. Montes algorithm computes certain approximations to the different irreducible factors of $f(x)$, with strong arithmetic properties. In this paper we develop an algorithm to improve any one of these approximations, till a prescribed precision is attained. The most natural application of this "single-factor lifting" routine is to combine it with Montes algorithm to provide a fast polynomial factorization algorithm. Moreover, the single-factor lifting algorithm may be applied as well to accelerate the computational resolution of several global arithmetic problems in which the improvement of an approximation to a single local irreducible factor of a polynomial is required.

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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