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RUP
FAMNIT - Faculty of Mathematics, Science and Information Technologies
FHŠ - Faculty of Humanities
FM - Faculty of Management
FTŠ Turistica - Turistica – College of Tourism Portorož
FVZ - Faculty of Health Sciences
IAM - Andrej Marušič Institute
PEF - Faculty of Education
UPR - University of Primorska
ZUP - University of Primorska Press
COBISS
University of Primorska, University Library - all departments
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Title:
Reflexivity defect of spaces of linear operators
Authors:
ID
Bračič, Janko
(Author)
ID
Kuzma, Bojan
(Author)
Files:
http://dx.doi.org/10.1016/j.laa.2008.07.024
Language:
English
Work type:
Not categorized
Typology:
1.01 - Original Scientific Article
Organization:
IAM - Andrej Marušič Institute
Abstract:
For a finite-dimensional linear subspace ▫{
\mathscr{S}} \subseteq {\mathscr{L}} (V,W)
▫ and a positive integer
k
, the
k
-reflexivity defect of
S
is defined by
r
d
k
(
S
)
=
dim
(
R
e
f
k
(
S
)
/
S
)
where
R
e
f
k
is the
k
-reflexive closure of
S
. We study this quantity for two-dimensional spaces of operators and for single generated algebras and their commutants.
Keywords:
mathematics
,
operator theory
,
reflexivity defect
,
reflexivity
,
two-dimensional space of operators
,
single generated algebra
,
commutant
Year of publishing:
2009
Number of pages:
str. 344-359
Numbering:
Vol. 430, iss. 1
PID:
20.500.12556/RUP-7728
ISSN:
0024-3795
UDC:
517.983:512.643
DOI:
10.1016/j.laa.2008.07.024
COBISS.SI-ID:
14977369
Publication date in RUP:
03.04.2017
Views:
2754
Downloads:
196
Metadata:
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:
BRAČIČ, Janko and KUZMA, Bojan, 2009, Reflexivity defect of spaces of linear operators. [online]. 2009. Vol. 430, no. 1, p. 344–359. [Accessed 5 April 2025]. DOI 10.1016/j.laa.2008.07.024. Retrieved from: http://dx.doi.org/10.1016/j.laa.2008.07.024
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Secondary language
Language:
Slovenian
Title:
Refleksivnostni defekt prostorov linearnih operatorjev
Abstract:
Za končnodimenzionalen linearen prostor
S
⊆
L
(
V
,
W
)
in naravno število
k
je
k
-refleksivnostni defekt prostora
S
definiran kot
r
d
k
(
S
)
=
dim
(
R
e
f
k
(
S
)
/
S
)
, pri čemer je
R
e
f
k
k
-refleksivnostno zaprtje za
S
. V članku izračunamo refleksivnostni defekt za dvodimenzionalne prostore operatorjev, za algebre generirane z enim operatorjem in za njihove komutante.
Keywords:
matematika
,
teorija operatorjev
,
refleksivnost
,
refleksivnostni defekt
,
dvodimenzionalen prostor operatorjev
,
algebra generirana z enim operatorjem
,
komutant
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