## Cobzaş, Ştefan

Compute Distance To:
 Author ID: cobzas.stefan Published as: Cobzaş, S.; Cobzaş, Ştefan; Cobzas, S.; Cobzaş, Stefan; Cobzaş, Ş.; Cobzas, Stefan Homepage: https://ictp.acad.ro/stefan-cobzas/ External Links: MGP · Google Scholar · ResearchGate · dblp
 Documents Indexed: 67 Publications since 1974, including 3 Books 1 Contribution as Editor Reviewing Activity: 539 Reviews Biographic References: 1 Publication Co-Authors: 10 Co-Authors with 17 Joint Publications 125 Co-Co-Authors
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### Co-Authors

 50 single-authored 6 Muntean, Ioan Lucian 6 Mustăţa, Costică 1 Czerwik, Stefan 1 Lin, Fucai 1 Lin, Shou 1 Liu, Chuan 1 Mabula, M. D. 1 Miculescu, Radu 1 Nicolae, Adriana 1 Rus, Mircea Dan
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### Serials

 10 Revue d’Analyse Numérique et de Théorie de l’Approximation 7 Topology and its Applications 5 Mathématica – Revue d’Analyse Numérique et de Théorie de l’Approximation. L’Analyse Numérique et la Théorie de l’Approximation 5 Studia Universitatis Babeș-Bolyai. Mathematica 3 Mathématica – Revue d’Analyse Numérique et de Théorie de l’Approximation. Mathématica 2 Journal of Mathematical Analysis and Applications 2 Journal of Approximation Theory 2 Buletinul Științific al Universității din Baia Mare. Seria B. Fascicola Matematică - Informatică 2 Preprint. “Babeș-Bolyai” University. Faculty of Mathematics and Physics. Research Seminars 1 Acta Universitatis Carolinae. Mathematica et Physica 1 Mathematica Balkanica 1 Archiv der Mathematik 1 Commentationes Mathematicae Universitatis Carolinae 1 International Journal of Mathematics and Mathematical Sciences 1 Quaestiones Mathematicae 1 Real Analysis Exchange 1 Annals of Operations Research 1 Aequationes Mathematicae 1 Mathematica 1 Journal of Mathematical Sciences (New York) 1 European Mathematical Society Newsletter 1 Analele Universității din Timișoara. Seria Matematică-Informatică 1 Abstract and Applied Analysis 1 Fixed Point Theory 1 Fixed Point Theory and Applications 1 Gazeta Matematică. Revistă de Cultură Matematică 1 Preprint. “Babeș-Bolyai” University. Faculty of Mathematics. Research Seminars 1 Lecture Notes in Mathematics 1 Advances in Operator Theory 1 Frontiers in Mathematics
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### Fields

 44 Functional analysis (46-XX) 24 Approximations and expansions (41-XX) 14 General topology (54-XX) 12 Operator theory (47-XX) 5 Calculus of variations and optimal control; optimization (49-XX) 4 Real functions (26-XX) 3 Global analysis, analysis on manifolds (58-XX) 2 General and overarching topics; collections (00-XX) 2 Order, lattices, ordered algebraic structures (06-XX) 2 Measure and integration (28-XX) 2 Harmonic analysis on Euclidean spaces (42-XX) 2 Operations research, mathematical programming (90-XX) 1 History and biography (01-XX) 1 Topological groups, Lie groups (22-XX) 1 Functions of a complex variable (30-XX) 1 Probability theory and stochastic processes (60-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX)

### Citations contained in zbMATH Open

41 Publications have been cited 272 times in 193 Documents Cited by Year
Functional analysis in asymmetric normed spaces. Zbl 1266.46001
Cobzaş, Ştefan
2013
Completeness in quasi-metric spaces and Ekeland variational principle. Zbl 1217.54026
Cobzaş, S.
2011
Generic existence of solutions for some perturbed optimization problems. Zbl 0957.49014
Cobzaş, S.
2000
Separation of convex sets and best approximation in spaces with asymmetric norm. Zbl 1082.41024
Cobzaş, S.
2004
Functional analysis in asymmetric normed spaces. Zbl 1296.46001
Cobzaş, S.
2011
Lipschitz functions. Zbl 1431.26002
2019
Geometric properties of Banach spaces and the existence of nearest and farthest points. Zbl 1100.46005
Cobzaş, Stefan
2005
Non convex optimization problems on weakly compact subsets of Banach spaces. Zbl 0456.49008
Cobzas, S.
1980
Asymmetric locally convex spaces. Zbl 1096.46002
Cobzaş, S.
2005
Variational principles, completeness and the existence of traps in behavioral sciences. Zbl 1476.91113
Bao, T. Q.; Cobzaş, S.; Soubeyran, A.
2018
Condensation of singularities and divergence results in approximation theory. Zbl 0478.41030
Cobzas, Stefan; Muntean, Ioan
1981
Antiproximinal sets in some Banach spaces. Zbl 0311.41028
Cobzas, S.
1974
Compact and precompact sets in asymmetric locally convex spaces. Zbl 1185.46001
Cobzaş, S.
2009
Antiproximinal sets in Banach spaces of $$c_0$$-type. Zbl 0408.41017
Cobzas, S.
1978
Ekeland variational principle in asymmetric locally convex spaces. Zbl 1251.46039
Cobzaş, S.
2012
Antiproximinal sets in Banach spaces of continuous functions. Zbl 0407.46025
Cobzas, S.
1976
Completeness with respect to the probabilistic Pompeiu-Hausdorff metric. Zbl 1164.46040
Cobzaş, Ştefan
2007
Extension of bounded linear functionals and best approximation in spaces with asymmetric norm. Zbl 1228.41029
Cobzaş, Stefan; Mustăţa, Costica
2004
A Mazur-Ulam theorem for probabilistic normed spaces. Zbl 1214.46055
Cobzaş, Stefan
2009
Zabrejko’s lemma and the fundamental principles of functional analysis in the asymmetric case. Zbl 1322.46004
Mabula, M. D.; Cobzaş, S.
2015
Norm-preserving extension of convex Lipschitz functions. Zbl 0405.41023
Cobzas, S.; Mustata, C.
1978
Free Abelian paratopological groups over metric spaces. Zbl 1307.22001
Lin, Fucai; Liu, Chuan; Lin, Shou; Cobzas, Stefan
2015
The completion of generalized b-metric spaces and fixed points. Zbl 1456.54012
Cobzaş, Ştefan; Czerwik, Stefan
2020
Antiproximinal sets in Banach spaces. Zbl 1010.46015
Cobzas, S.
1999
Fixed point theorems in locally convex spaces – the Schauder mapping method. Zbl 1103.47045
Cobzaş, S.
2006
Continuous and locally Lipschitz convex functions. Zbl 0385.46029
Cobzas, Stefan; Muntean, Ioan
1976
Antiproximinal sets in the Banach space $$c( X)$$. Zbl 0887.41029
Cobzaş, S.
1997
Duality relations and characterizations of best approximation for p- convex sets. Zbl 0647.41023
Cobzaş, Ştefan; Muntean, Ioan
1987
Compact operators on spaces with asymmetric norm. Zbl 1150.46312
Cobzaş, Ş.
2006
Fixed points and completeness in metric and generalized metric spaces. Zbl 1451.54011
Cobzaş, S.
2020
Ekeland, Takahashi and Caristi principles in quasi-pseudometric spaces. Zbl 1423.58009
Cobzaş, S.
2019
Normal cones and Thompson metric. Zbl 1330.46007
Cobzaş, Ştefan; Rus, Mircea-Dan
2014
Lipschitz properties for families of convex mappings. Zbl 1079.46522
Cobzaş, Ş.
2001
Antiproximinal sets in the Banach space $$C(\omega^k;X)$$. Zbl 1075.46509
Cobzaş, S.
1998
Best approximation in spaces with asymmetric norm. Zbl 1150.41353
Cobzaş, S.; Mustăţa, C.
2006
Best approximation in random normed spaces. Zbl 1073.46515
Cobzaş, Stefan
2003
Some questions in the theory of Šerstnev random normed spaces. Zbl 1037.46066
Cobzaş, Ştefan
2002
Hahn decompositions of finitely additive measures. Zbl 0338.28004
Cobzas, S.
1976
Support functionals of the unit ball in Banach spaces of bounded functions. Zbl 0744.46011
Cobzaş, S.
1986
Book review of: A. Kubzdela, Selected topics in non-Archimedean Banach spaces. Zbl 1403.00004
Cobzaş, Stefan
2018
Lipschitz properties of convex functions. Zbl 1379.46056
Cobzaş, Stefan
2017
The completion of generalized b-metric spaces and fixed points. Zbl 1456.54012
Cobzaş, Ştefan; Czerwik, Stefan
2020
Fixed points and completeness in metric and generalized metric spaces. Zbl 1451.54011
Cobzaş, S.
2020
Lipschitz functions. Zbl 1431.26002
2019
Ekeland, Takahashi and Caristi principles in quasi-pseudometric spaces. Zbl 1423.58009
Cobzaş, S.
2019
Variational principles, completeness and the existence of traps in behavioral sciences. Zbl 1476.91113
Bao, T. Q.; Cobzaş, S.; Soubeyran, A.
2018
Book review of: A. Kubzdela, Selected topics in non-Archimedean Banach spaces. Zbl 1403.00004
Cobzaş, Stefan
2018
Lipschitz properties of convex functions. Zbl 1379.46056
Cobzaş, Stefan
2017
Zabrejko’s lemma and the fundamental principles of functional analysis in the asymmetric case. Zbl 1322.46004
Mabula, M. D.; Cobzaş, S.
2015
Free Abelian paratopological groups over metric spaces. Zbl 1307.22001
Lin, Fucai; Liu, Chuan; Lin, Shou; Cobzas, Stefan
2015
Normal cones and Thompson metric. Zbl 1330.46007
Cobzaş, Ştefan; Rus, Mircea-Dan
2014
Functional analysis in asymmetric normed spaces. Zbl 1266.46001
Cobzaş, Ştefan
2013
Ekeland variational principle in asymmetric locally convex spaces. Zbl 1251.46039
Cobzaş, S.
2012
Completeness in quasi-metric spaces and Ekeland variational principle. Zbl 1217.54026
Cobzaş, S.
2011
Functional analysis in asymmetric normed spaces. Zbl 1296.46001
Cobzaş, S.
2011
Compact and precompact sets in asymmetric locally convex spaces. Zbl 1185.46001
Cobzaş, S.
2009
A Mazur-Ulam theorem for probabilistic normed spaces. Zbl 1214.46055
Cobzaş, Stefan
2009
Completeness with respect to the probabilistic Pompeiu-Hausdorff metric. Zbl 1164.46040
Cobzaş, Ştefan
2007
Fixed point theorems in locally convex spaces – the Schauder mapping method. Zbl 1103.47045
Cobzaş, S.
2006
Compact operators on spaces with asymmetric norm. Zbl 1150.46312
Cobzaş, Ş.
2006
Best approximation in spaces with asymmetric norm. Zbl 1150.41353
Cobzaş, S.; Mustăţa, C.
2006
Geometric properties of Banach spaces and the existence of nearest and farthest points. Zbl 1100.46005
Cobzaş, Stefan
2005
Asymmetric locally convex spaces. Zbl 1096.46002
Cobzaş, S.
2005
Separation of convex sets and best approximation in spaces with asymmetric norm. Zbl 1082.41024
Cobzaş, S.
2004
Extension of bounded linear functionals and best approximation in spaces with asymmetric norm. Zbl 1228.41029
Cobzaş, Stefan; Mustăţa, Costica
2004
Best approximation in random normed spaces. Zbl 1073.46515
Cobzaş, Stefan
2003
Some questions in the theory of Šerstnev random normed spaces. Zbl 1037.46066
Cobzaş, Ştefan
2002
Lipschitz properties for families of convex mappings. Zbl 1079.46522
Cobzaş, Ş.
2001
Generic existence of solutions for some perturbed optimization problems. Zbl 0957.49014
Cobzaş, S.
2000
Antiproximinal sets in Banach spaces. Zbl 1010.46015
Cobzas, S.
1999
Antiproximinal sets in the Banach space $$C(\omega^k;X)$$. Zbl 1075.46509
Cobzaş, S.
1998
Antiproximinal sets in the Banach space $$c( X)$$. Zbl 0887.41029
Cobzaş, S.
1997
Duality relations and characterizations of best approximation for p- convex sets. Zbl 0647.41023
Cobzaş, Ştefan; Muntean, Ioan
1987
Support functionals of the unit ball in Banach spaces of bounded functions. Zbl 0744.46011
Cobzaş, S.
1986
Condensation of singularities and divergence results in approximation theory. Zbl 0478.41030
Cobzas, Stefan; Muntean, Ioan
1981
Non convex optimization problems on weakly compact subsets of Banach spaces. Zbl 0456.49008
Cobzas, S.
1980
Antiproximinal sets in Banach spaces of $$c_0$$-type. Zbl 0408.41017
Cobzas, S.
1978
Norm-preserving extension of convex Lipschitz functions. Zbl 0405.41023
Cobzas, S.; Mustata, C.
1978
Antiproximinal sets in Banach spaces of continuous functions. Zbl 0407.46025
Cobzas, S.
1976
Continuous and locally Lipschitz convex functions. Zbl 0385.46029
Cobzas, Stefan; Muntean, Ioan
1976
Hahn decompositions of finitely additive measures. Zbl 0338.28004
Cobzas, S.
1976
Antiproximinal sets in some Banach spaces. Zbl 0311.41028
Cobzas, S.
1974
all top 5