Certified Hermite matrices from approximate roots
Certified Hermite matrices from approximate roots
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来自近似根的经认证的 Hermite 矩阵
DOI:
10.1016/j.jsc.2022.12.001
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发表时间:
2023
影响因子:
0.7
通讯作者:
Szanto, Agnes
中科院分区:
文献类型:
--
作者:
Ayyildiz Akoglu, Tulay;Szanto, Agnes
Abstract Let I=< f 1,…, f m>⊂ Q [x 1,…, x n] be a zero dimensional radical ideal defined by polynomials given with exact rational coefficients. Assume that we are given approximations {z 1,…, z k}⊂ C n for the common roots {ξ 1,…, ξ k}= V (I)⊆ C n. In this paper we show how to construct and certify the rational entries of Hermite matrices for I from the approximate roots {z 1,…, z k}. When I is non-radical, we give methods to construct and certify Hermite matrices for I from the approximate roots. Furthermore, we use signatures of these Hermite matrices to give rational certificates of non-negativity of a given polynomial over a (possibly positive dimensional) real variety, as well as certificates that there is a real root within an ε distance from a given point z∈ Q n.
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DOI:
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发表时间:
2007
期刊:
Mathematics and Computer Science
影响因子:
--
作者:
Itnuit Janovitz;L. Rónyai;Á. Szántó
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Á. Szántó
DOI:
10.1515/crll.1856.52.39
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2014
期刊:
Journal für die reine und angewandte Mathematik (Crelles Journal)
影响因子:
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作者:
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期刊:
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作者:
Candèze
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影响因子:
4
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通讯作者:
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DOI:
10.1007/978-3-030-43120-4_1
发表时间:
2020
期刊:
volume 11989
影响因子:
--
作者:
Ayyildiz Akoglu, T;Szanto, A.
通讯作者:
Szanto, A.