Inverse nodal problems for Sturm–Liouville equations on graphs

Inverse nodal problems for Sturm–Liouville equations on graphs
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DOI:
10.1088/0266-5611/23/5/013
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发表时间:
2007-08
期刊:
影响因子:
2.1
通讯作者:
S. Currie;B. Watson
S. Currie;B. Watson
中科院分区:
数学2区
文献类型:
--
作者:
S. Currie;B. Watson

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我们考虑图上的逆节点问题。本征函数和本征值渐近近似被用来提供一个渐近表达式的节点上的每一个边缘的图形的间距。在此基础上,证明了给定节点数据的势的唯一性,并给出了q作为函数序列的极限的构造,其中q的第n项只依赖于第n个特征值及其相关节点数据。
We consider inverse nodal problems on graphs. Eigenfunction and eigenvalue asymptotic approximations are used to provide an asymptotic expression for the spacing of nodal points on each edge of the graph. Based on this, the uniqueness of the potential for given nodal data is proved and we give a construction of q as a limit, in , of a sequence of functions whose nth term is dependent only on the nth eigenvalue and its associated nodal data.