Quasinilpotent operators and non-Euclidean metrics
Quasinilpotent operators and non-Euclidean metrics
复制标题
准幂算子和非欧几里得度量
DOI:
10.1016/j.jmaa.2018.08.037
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发表时间:
2018-12
影响因子:
1.3
通讯作者:
Yang Rongwei
中科院分区:
文献类型:
--
作者:
Liang Yu-Xia;Yang Rongwei
The power set Λ (V) of quasinilpotent operator V on a Hilbert space H is defined in [4] to study the singularity of the non-Euclidean metrics‖(V− z)− 1 x‖ 2 d z⊗ d z¯ at σ (V)={0}, and it is shown that if Λ (V) contains more than one point then V has a nontrivial hyperinvariant subspace. This paper first proves that the Volterra integral operator on the classical Hardy–Hilbert space has singleton power set, thus answering a question raised in [4]. Then, it studies the length of circles under the metrics and its connection with power set. In particular, it determines the maximal length of the unit circle with respect to the change of x in the metrics. Moreover, it shows that an extremal value integral equation is able to detect representing functions for all the invariant subspaces of the Volterra operator.
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DOI:
10.1007/bf02559714
发表时间:
1995-10
期刊:
Arkiv för Matematik
影响因子:
--
作者:
M. Putinar
通讯作者:
M. Putinar
影响因子:
1.7
作者:
Don Deckard;R. Douglas;C. Pearcy
通讯作者:
Don Deckard;R. Douglas;C. Pearcy
DOI:
10.1007/978-3-319-72449-2_8
发表时间:
2016-08
期刊:
arXiv: Functional Analysis
影响因子:
--
作者:
R. Douglas;Rongwei Yang
通讯作者:
R. Douglas;Rongwei Yang
影响因子:
0.7
作者:
C. Foias;I. Jung;Eungil Ko;C. Pearcy
通讯作者:
C. Foias;I. Jung;Eungil Ko;C. Pearcy
影响因子:
1.3
作者:
A. Aleman;B. Korenblum
通讯作者:
A. Aleman;B. Korenblum