Results 41 to 50 of about 554 (59)
Hyperinvariant subspaces for operators having a normal part
, 2011 Let T be a nonscalar operator of the form ( A ∗ 0 B ) . It is well known ([5], [6]) that if both A and B are normal operators, then T has a nontrivial hyperinvariant subspace.
Hyoungsoon Kim
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Approximation in reflexive Banach spaces and applications to the invariant subspace problem [PDF]
, 2004 We formulate a general approximation problem involving reflexive and smooth Banach spaces, and give its explicit solution. Two applications are presented— the first is to the Bounded Completion Problem involving approximation of Hardy class functions ...
Chalendar, I. +2 more
core
Strongly splitting weighted shift operators on Banach spaces and unicellularity
, 2011 We introduce the notion of strong splitting operator on a separable Banach space, and prove a structure theorem for this operator. We consider the weighted shift operator T, Ten = λnen+1, n 0, acting in the Banach space X with basis {en}n 0 .
M. Karaev, M. Gürdal
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Partially hyper invariant subspaces
, 2012 Between invariance and hyperinvariance are at least two other kinds of partially hyperinvariant subspace. Mathematics subject classification (2010): Primary 47A15; secondary 47A10, 47A60.
S. Djordjević, R. Harte, D. Larson
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, 2011 In this paper, we show that some 2× 2 operator matrices have scalar extensions. In particular, we focus on some 2-hyponormal operators and their generalizations.
Sungeun Jung, Yoenha Kim, Eungil Ko
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Regularity Problem for Extremal Vectors
, 2007 In this paper, we will use results developed by Ansari and Enflo in the theory of bounded linear operators with dense range. We define two maps, with regards to some parameters, that control surjectivity default of a given operator, and prove analycity ...
Verliat, Jerome
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Comments on the cosmic convergence of nonexpansive maps. [PDF]
J Fixed Point Theory Appl, 2021 Gutiérrez AW, Karlsson A.
europepmc +1 more source
Iwanami Studies in Advanced Mathematics Hilbert Spaces of Analytic Functions Takahiko Nakazi Professor (Emeritus) of Hokkaido University Mathematical Subject Classification (2000): Primary 46E22; Secondary 47A15, 47B35, 60G10identifier:北海学園大学学園論集 identifier:03857271 identifier:http://hokuga.hgu.jp/dspace/handle/123456789 ...
openaire
Iwanami Studies in Advanced Mathematics Hilbert Spaces of Analytic Functions (2) Takahiko Nakazi Professor (Emeritus) of Hokkaido University Mathematical Subject Classification (2000): Primary 46E22; Secondary 47A15, 47B35, 60G10 First published in 2009 in Japanese as Seisoku Kansu no nasu Hiruberuto kukan by Iwanami Shoten, Publishers, Tokyo.identifier:北海学園大学学園論集 identifier:03857271 identifier:http://hokuga.hgu.jp/dspace/handle/123456789 ...
openaire
Orbits of Linear Operators Tending to Infinity
, 2009 V. Müller, Jan Vrs˘ovský
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