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- 1.0488853 - MÚ 2019 RIV RO eng J - Journal Article
Ambrozie, Calin-Grigore - Gheondea, A.
Interpolation for completely positive maps: Numerical solutions.
Societe des Sciences Mathematiques de Roumanie. Bulletin Mathematique. Roč. 61, č. 1 (2018), s. 13-22. ISSN 1220-3874. E-ISSN 2065-0264
Institutional support: RVO:67985840
Keywords : Choi matrix * completely positive * convex minimization
OECD category: Pure mathematics
Impact factor: 0.571, year: 2018
http://ssmr.ro/bulletin/volumes/61-1/node3.html
Permanent Link: http://hdl.handle.net/11104/0283375File Download Size Commentary Version Access Ambrozie.pdf 1 351.4 KB Publisher’s postprint require - 2.0440874 - MÚ 2015 RIV GB eng J - Journal Article
Ambrozie, Calin-Grigore - Gheondea, A.
An interpolation problem for completely positive maps on matrix algebras: solvability and parametrization.
Linear & Multilinear Algebra. Roč. 63, č. 4 (2015), s. 826-851. ISSN 0308-1087. E-ISSN 1563-5139
R&D Projects: GA AV ČR IAA100190903
Institutional support: RVO:67985840
Keywords : Choi matrix * completely positive * density matrix
Subject RIV: BA - General Mathematics
Impact factor: 0.761, year: 2015
http://www.tandfonline.com/doi/abs/10.1080/03081087.2014.903253
Permanent Link: http://hdl.handle.net/11104/0243974File Download Size Commentary Version Access Ambrozie.pdf 1 391.5 KB Publisher’s postprint require - 3.0427766 - MÚ 2015 RIV RO eng J - Journal Article
Ambrozie, Calin-Grigore
A Riesz-Haviland type result for truncated moment problems with solutions in L.
Journal of Operator Theory. Roč. 71, č. 1 (2014), s. 85-93. ISSN 0379-4024. E-ISSN 1841-7744
R&D Projects: GA AV ČR IAA100190903; GA ČR GA201/09/0473
Institutional support: RVO:67985840
Keywords : measure * moments problem * positive functional
Subject RIV: BA - General Mathematics
Impact factor: 0.550, year: 2014
http://www.mathjournals.org/jot/2014-071-001/2014-071-001-005.html
Permanent Link: http://hdl.handle.net/11104/0233258File Download Size Commentary Version Access Ambrozie.pdf 1 165.7 KB Publisher’s postprint require - 4.0422280 - MÚ 2014 RIV CH eng J - Journal Article
Ambrozie, Calin-Grigore
Multivariate truncated moments problems and maximum entropy.
Analysis and Mathematical Physics. Roč. 3, č. 2 (2013), s. 145-161. ISSN 1664-2368. E-ISSN 1664-235X
R&D Projects: GA AV ČR IAA100190903
Institutional support: RVO:67985840
Keywords : moments problem * representing measure * entropy
Subject RIV: BA - General Mathematics
http://link.springer.com/article/10.1007%2Fs13324-012-0052-3
Permanent Link: http://hdl.handle.net/11104/0228567File Download Size Commentary Version Access Ambrozie2.pdf 1 305.2 KB Publisher’s postprint require - 5.0391462 - MÚ 2014 RIV CZ eng J - Journal Article
Ambrozie, Calin-Grigore
On a variational approach to truncated problems of moments.
Mathematica Bohemica. Roč. 138, č. 1 (2013), s. 105-112. ISSN 0862-7959
R&D Projects: GA AV ČR IAA100190903
Institutional support: RVO:67985840
Keywords : problem of moments * representing measure
Subject RIV: BA - General Mathematics
http://www.dml.cz/handle/10338.dmlcz/143233
Permanent Link: http://hdl.handle.net/11104/0220503File Download Size Commentary Version Access Ambrozie.pdf 3 152.3 KB Publisher’s postprint open-access - 6.0386898 - MÚ 2013 RIV US eng J - Journal Article
Ambrozie, Calin-Grigore - Bračič, J. - Kuzma, B. - Müller, Vladimír
The commuting graph of bounded linear operators on a Hilbert space.
Journal of Functional Analysis. Roč. 264, č. 4 (2013), s. 1068-1087. ISSN 0022-1236. E-ISSN 1096-0783
R&D Projects: GA ČR GA201/09/0473; GA AV ČR IAA100190903; GA MŠMT(CZ) MEB091101
Institutional support: RVO:67985840
Keywords : Hilbert space * operators * commutativity
Subject RIV: BA - General Mathematics
Impact factor: 1.152, year: 2013
http://www.sciencedirect.com/science/article/pii/S002212361200420X#
Permanent Link: http://hdl.handle.net/11104/0218604File Download Size Commentary Version Access Ambrozie1.pdf 2 248.4 KB Publisher’s postprint require - 7.0343537 - MÚ 2011 RIV RO eng J - Journal Article
Ambrozie, Calin-Grigore
Remarks on Bishop - type operators.
Annals of the University of Bucharest. Roč. 59, č. 1 (2010), s. 5-16. ISSN 1010-5433
R&D Projects: GA ČR(CZ) GA201/06/0128; GA AV ČR IAA100190903
Institutional research plan: CEZ:AV0Z10190503
Keywords : invariant subspace * irrational rotation
Subject RIV: BA - General Mathematics
http://fmi.unibuc.ro/ro/anale/matematica/1_2010/ambrozie.pdf
Permanent Link: http://hdl.handle.net/11104/0185991File Download Size Commentary Version Access Ambrozie1.pdf 1 209.5 KB Publisher’s postprint require - 8.0338965 - MÚ 2010 RIV US eng J - Journal Article
Ambrozie, Calin-Grigore - Kuzma, B. - Müller, Vladimír
An upper bound on the dimension of the reflexivity closure.
Proceedings of the American Mathematical Society. Roč. 138, č. 5 (2010), s. 1721-1731. ISSN 0002-9939. E-ISSN 1088-6826
R&D Projects: GA MŠMT MEB090905; GA ČR GA201/09/0473
Institutional research plan: CEZ:AV0Z10190503
Keywords : linear space * reflexivity closure
Subject RIV: BA - General Mathematics
Impact factor: 0.601, year: 2010
http://www.ams.org/journals/proc/2010-138-05/S0002-9939-09-10184-3/
Permanent Link: http://hdl.handle.net/11104/0182607File Download Size Commentary Version Access Ambrozie.pdf 16 221.8 KB Publisher’s postprint require - 9.0322073 - MÚ 2009 RIV RO eng J - Journal Article
Ambrozie, Calin-Grigore - Müller, Vladimír
Dominant Taylor Spectrum and Invariant Subspaces.
[Dominantní Taylorovo spektrum a invariantní podprostory.]
Journal of Operator Theory. Roč. 61, č. 1 (2009), s. 101-111. ISSN 0379-4024. E-ISSN 1841-7744
R&D Projects: GA ČR(CZ) GA201/06/0128
Institutional research plan: CEZ:AV0Z10190503
Keywords : Taylor spectrum * Scott-Brown technique * dominant spectrum
Subject RIV: BA - General Mathematics
Impact factor: 0.580, year: 2009
Permanent Link: http://hdl.handle.net/11104/0170431File Download Size Commentary Version Access Ambrozie.pdf 1 159.6 KB Author´s preprint require - 10.0316280 - MÚ 2009 RIV US eng J - Journal Article
Ambrozie, Calin-Grigore
Finding positive matrices subject to linear restrictions.
[Pozitivní matrice splňující lineární podmínky.]
Linear Algebra and Its Applications. Roč. 426, č. 3 (2007), s. 716-728. ISSN 0024-3795. E-ISSN 1873-1856
R&D Projects: GA ČR(CZ) GA201/06/0128
Institutional research plan: CEZ:AV0Z10190503
Keywords : positive definite * completions
Subject RIV: BA - General Mathematics
Impact factor: 0.702, year: 2007
Permanent Link: http://hdl.handle.net/11104/0166255File Download Size Commentary Version Access Ambrozie.pdf 1 217 KB Publisher’s postprint require