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arXiv 2006.09362math.CA
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用常微分方程解多项式

Solving polynomials with ordinary differential equations

Armengol Gasull, Hector Giacomini

摘要:

在这项工作中,我们考虑一个给定的根的一个家庭的n次多项式作为一个一元函数,只依赖于独立的条款。证明了该函数满足多个常微分方程。更具体地说,它满足多个简单分离变量常微分方程,一个n-1阶广义Abel常微分方程和一个n-1阶线性常微分方程。虽然我们的一些结果不是新的,我们的方法是简单和独立的。对于n=2,3和4,我们恢复,从这些常微分方程,解决这些多项式的经典公式。

英文摘要:

In this work we consider a given root of a family of n-degree polynomials as a one-variable function that depends only on the independent term. Then we prove that this function satisfies several ordinary differential equations (ODE). More concretely, it satisfies several simple separated variables ODE, a first order generalized Abel ODE of degree n-1 and an (n-1)-th order linear ODE. Although some of our results are not new, our approach is simple and self-contained. For n=2, 3 and 4 we recover, from these ODE, the classical formulas for solving these polynomials.

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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