scientific article; zbMATH DE number 882078
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Publication:4879465
zbMath0845.47011MaRDI QIDQ4879465
Publication date: 27 May 1996
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
quantum field theorycommutative properties of the singularly perturbed selfadjoint operatorssingularly perturbed normal operators
Perturbation theory of linear operators (47A55) Linear symmetric and selfadjoint operators (unbounded) (47B25) Selfadjoint operator theory in quantum theory, including spectral analysis (81Q10) Perturbation theories for operators and differential equations in quantum theory (81Q15)
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