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Weyl spectra of operator matrices |
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| Authors: | Woo Young Lee |
| Affiliation: | Department of Mathematics, Sungkyunkwan University, Suwon 440-746, Korea |
| Abstract: | In this paper it is shown that if |
| Keywords: | Weyl spectrum Weyl's theorem operator matrices |
| 点击此处可从《Proceedings of the American Mathematical Society》浏览原始摘要信息 | |
| 点击此处可从《Proceedings of the American Mathematical Society》下载全文 | |
is a 
upper triangular operator matrix acting on the Hilbert space 
and if 
denotes the ``Weyl spectrum", then the passage from 
to 
is accomplished by removing certain open subsets of 
from the former, that is, there is equality 
where 
is the union of certain of the holes in 
which happen to be subsets of 
.