An Ambarzumian type theorem on graphs with odd cycles

UDC 517.9 We consider an inverse problem for Schrödinger operators on a connected equilateral graph $G$ with standard matching conditions.  The graph $G$ consists of at least two odd cycles glued together at a common vertex.  We prove an Ambarzumia...

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Bibliographic Details
Date:2023
Main Author: Kiss, M.
Format: Article
Language:English
Published: Institute of Mathematics, NAS of Ukraine 2023
Online Access:https://umj.imath.kiev.ua/index.php/umj/article/view/6734
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Journal Title:Ukrains’kyi Matematychnyi Zhurnal
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Ukrains’kyi Matematychnyi Zhurnal
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Summary:UDC 517.9 We consider an inverse problem for Schrödinger operators on a connected equilateral graph $G$ with standard matching conditions.  The graph $G$ consists of at least two odd cycles glued together at a common vertex.  We prove an Ambarzumian-type result, i.e., if a specific part of the spectrum is the same as in the case of zero potential, then the potential must be equal to zero.
DOI:10.37863/umzh.v74i12.6734