Absence of eigenvalues of non-selfadjoint Schr\"odinger operators on the boundary of their numerical range
classification
🧮 math.SP
keywords
absenceboundaryeigenvaluesnon-selfadjointnumericalodingeroperatorsrange
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We use a classical result of Hildebrandt to establish simple conditions for the absence of eigenvalues of non-selfadjoint discrete and continuous Schr\"odinger operators on the boundary of their numerical range.
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