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Uniqueness theorems for the impulsive Dirac operator with discontinuity - MaRDI portal

Uniqueness theorems for the impulsive Dirac operator with discontinuity (Q2066354)

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scientific article; zbMATH DE number 7457161
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English
Uniqueness theorems for the impulsive Dirac operator with discontinuity
scientific article; zbMATH DE number 7457161

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    Uniqueness theorems for the impulsive Dirac operator with discontinuity (English)
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    14 January 2022
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    The paper deals with an impulsive Dirac operator with discontinuity \[ly:=-By^{\prime}+Q(x)y=\lambda\rho y,\qquad x\in(0,\pi),\] with the boundary conditions \[U(y):=y_{1}(0)\cos\alpha+y_{2}(0)\sin\alpha=0,\,\,V(y):=y_{1}(\pi)\cos\beta+y_{2}(\pi)\sin\beta=0\] and the jump conditions \[y_{1}(b+0)=a_{1}y_{1}(b-0),y_{2}(b+0)=a_{1}^{-1}y_{2}(b-0)+a_{2}y_{1}(b-0).\] Here \(\alpha\in(-\pi/2,\pi/2]\) and \(\beta\in(-\pi/2,\pi/2).\) For studying the inverse problem for \(l\), the author introduced the new supplementary data to prove the uniqueness theorems. It is shown that the potential on the whole interval can be uniquely determined by these given data, which are the analogues of Borg, Marchenko and McLaughlin-Rundell theorems. The results in this paper can be viewed as the generalizing in [\textit{T. N. Harutyunyan}, Lobachevskii J. Math. 40, No. 10, 1489--1497 (2019; Zbl 1483.34028)].
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    impulsive Dirac operator
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    discontinuous condition
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    inverse problem
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    spectrum
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    uniqueness
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