LOWER BOUNDS FOR EIGENVALUES OF SCHATTEN-VON NEUMANN OPERATORS
LOWER BOUNDS FOR EIGENVALUES OF SCHATTEN-VON NEUMANN OPERATORS
复制标题
沙特顿-冯·诺依曼算子特征值的下界
DOI:
10.1007/s11854-014-0026-5
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发表时间:
2007
期刊:
影响因子:
--
通讯作者:
M. Gil'
中科院分区:
文献类型:
--
作者:
M. Gil'
Let Sp be the Schatten-von Neumann ideal of compact operators equipped with the normNp(·). For anA ∈ Sp (1 < p < ∞), the inequality [ ∞ ∑ k=1 |Re λk(A)| ] 1 p + bp [ ∞ ∑ k=1 | Im λk(A)| ] 1 p ≥ Np(AR)− bpNp(AI) (bp = const.> 0) is derived, whereλj(A) (j = 1, 2, . . . ) are the eigenvalues of A, AI = (A − A∗)/2i and AR = (A + A∗)/2. The suggested approach is based on some relations between the real and imaginary Hermitian components of quasinilpotent operators.