Middle convolution and Harnad duality

Middle convolution and Harnad duality
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中卷积和Harnad对偶

DOI:
10.1007/s00208-010-0517-3
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发表时间:
2009
影响因子:
1.4
通讯作者:
Daisuke Yamakawa
Daisuke Yamakawa
中科院分区:
数学2区
文献类型:
--
作者:
Daisuke Yamakawa

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Dettweiler-Reiter 对 Katz 中间卷积的加性描述可以用 Harnad 对偶性来解释。将这种解释与 Mumford 的几何不变理论结合起来,我们将加性中间卷积推广为具有多参数,并作用于具有不规则奇点的线性常微分方程组。我们证明了泛化操作保留了原始操作的基本属性,此外,还表明涉及我们泛化的卡茨算法在泛化情况下运行良好。
Dettweiler–Reiter’s additive description of Katz’s middle convolution can be interpreted in terms of the Harnad duality. Using this interpretation together with Mumford’s geometric invariant theory, we generalize the additive middle convolution to have a multi-parameter and act on systems of linear ordinary differential equations with irregular singularities. We show that the generalized operation holds basic properties of the original one, and additionally, show that Katz’s algorithm involving our generalization works well in generic case.
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