A note on Browder spectrum of operator matrices
A note on Browder spectrum of operator matrices
复制标题
关于算子矩阵的布劳德谱的注解
DOI:
10.1016/j.jmaa.2008.03.048
复制
发表时间:
2008-08
影响因子:
1.3
通讯作者:
中科院分区:
文献类型:
--
作者:
When A∈B(H) and B∈B(K) are given, we denote by MCthe operator acting on the Hilbert space H⊕K of the form MC=(AC0B). In this note, it is shown that the following results in [Hai-Yan Zhang, Hong-Ke Du, Browder spectra of upper-triangular operator matrices, J. Math. Anal. Appl. 323 (2006) 700–707] and are not always true, although the authors tried to fill the gap in their proofs by proposing an additional condition in [H.-Y. Zhang, H.-K Du, Corrigendum to “Browder spectra of upper-triangular operator matrices” [J. Math. Anal. Appl. 323 (2006) 700–707], J. Math. Anal. Appl. 337 (2007) 751–752]. A counterexample is given and then we show that under one of the following conditions: we have where W(A,B)={λ∈C:N(B−λ)andH/R(A−λ)¯are not isomorphic up to a finitedimensional subspace}.
登录
查看更多内容
DOI:
10.2307/2310495
发表时间:
1959-11
期刊:
--
影响因子:
--
作者:
V. Kisil;J. Partington;D. Salinger;Filipa Soares de Almeida;Eric Borgnet
通讯作者:
V. Kisil;J. Partington;D. Salinger;Filipa Soares de Almeida;Eric Borgnet
影响因子:
1.3
作者:
Hai-Yan Zhang;H. Du
通讯作者:
Hai-Yan Zhang;H. Du
DOI:
10.1090/s0002-9939-01-06291-8
发表时间:
2002
期刊:
--
影响因子:
--
作者:
M. Berkani
通讯作者:
M. Berkani
DOI:
10.1007/0-387-22620-6_7
发表时间:
1997-10
期刊:
--
影响因子:
--
作者:
R. Meise;D. Vogt
通讯作者:
R. Meise;D. Vogt
DOI:
--
发表时间:
2010
期刊:
--
影响因子:
--
作者:
Dileep Menon
通讯作者:
Dileep Menon