An Eigenvalue Estimate and Its Application to Non-Selfadjoint Jacobi and Schrödinger Operators
An Eigenvalue Estimate and Its Application to Non-Selfadjoint Jacobi and Schrödinger Operators
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特征值估计及其在非自共轭雅可比和薛定谔算子中的应用
DOI:
10.1007/s11005-011-0494-9
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发表时间:
2010
影响因子:
1.2
通讯作者:
Marcel Hansmann
中科院分区:
文献类型:
--
作者:
Marcel Hansmann
For bounded linear operators A, B on a Hilbert space $${\mathcal{H}}$$ we show that $${ \sum_{\lambda}{\rm dist}(\lambda, {\rm Num}(A))^p}$$ is bounded from above by the Schatten-p-norm of B − A. Here, the sum is taken over all discrete eigenvalues of B and Num(A) denotes the numerical range of A. We apply this estimate to recover and improve some Lieb–Thirring type inequalities for non-selfadjoint Jacobi and Schrödinger operators.