Apparent Singularities of D-finite Systems
Apparent Singularities of D-finite Systems
复制标题
D 有限系统的表观奇点
DOI:
10.1016/j.jsc.2019.02.009
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发表时间:
2017-05
影响因子:
0.7
通讯作者:
Yi Zhang
中科院分区:
文献类型:
--
作者:
Shaoshi Chen;Manuel Kauers;Ziming Li;Yi Zhang
We generalize the notions of ordinary points and singularities from linear ordinary differential equations to D-finite systems. Ordinary points and apparent singularities of a D-finite system are characterized in terms of its formal power series solutions. We also show that apparent singularities can be removed like in the univariate case by adding suitable additional solutions to the system at hand. Several algorithms are presented for removing and detecting apparent singularities. In addition, an algorithm is given for computing formal power series solutions of a D-finite system at apparent singularities.
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发表时间:
2014-10
期刊:
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