FINITENESS OF THE DISCRETE SPECTRUM OF SOME BLOCK TOEPLITZ-OPERATORS

被引:1
|
作者
FELDMAN, I [1 ]
机构
[1] BAR ILAN UNIV,DEPT MATH & COMP SCI,IL-52900 RAMAT GAN,ISRAEL
关键词
MSC; 1991:; 47B35; 47A10;
D O I
10.1007/BF01204228
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Sufficient conditions are given for the finiteness of the discrete spectrum of the block Toeplitz operator T(A) generated in the space H-2n by self-adjoint matrix function A(t)(Absolute value of t = 1). These results are obtained by means of theorems concerning the spectrum of a perturbed self-adjoint operators.
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页码:385 / 391
页数:7
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