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Хайрулла Муртазин, Khairulla Murtazin, Зиганур Фазуллин, Z. Fazullin (2005)
Неядерные возмущения дискретных операторов и формулы следов@@@Non-nuclear perturbations of discrete operators and trace formulaeMatematicheskii Sbornik, 196
P. Morse, H. Feshbach (1955)
Methods of theoretical physics
In the space L 2[0, π], we consider the operators $$ L = L_0 + V, L_0 = - y'' + (\nu ^2 - 1/4)r^{ - 2} y (\nu \geqslant 1/2) $$ with the Dirichlet boundary conditions. The potential V is the operator of multiplication by a function (in general, complex-valued) in L 2[0, π] satisfying the condition $$ \int\limits_0^\pi {r^\varepsilon } (\pi - r)^\varepsilon |V(r)|dr < \infty , \varepsilon \in [0,1] $$ . We prove the trace formula Σ n=1 ∞ [µ n − λ n − Σ k=1 m α k (n) ] = 0.
Differential Equations – Springer Journals
Published: Feb 11, 2009
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