×

Popa, Constantin Gh.

Compute Distance To:
Author ID: popa.constantin-gh Recent zbMATH articles by "Popa, Constantin Gh."
Published as: Popa, Constantin; Popa, C.; Popa, C. G.; Popa, Const. Gh.; Popa, Constantin Gh.
Homepage: http://www.ima.ro/people/cpopa.html
External Links: ORCID · Google Scholar · ResearchGate · dblp
Documents Indexed: 110 Publications since 1959, including 1 Book
Reviewing Activity: 586 Reviews
Biographic References: 1 Publication
Co-Authors: 36 Co-Authors with 49 Joint Publications
875 Co-Co-Authors
all top 5

Serials

12 International Journal of Computer Mathematics
8 Analele Științifice ale Universității “Ovidius” Constanța. Seria: Matematică
7 Numerical Algorithms
6 Lucrările Știențifice ale Institutului Pedagogie Timișoara. Matematică-Fizică
5 Mathematics and Computers in Simulation
5 Studii și Cercetări Matematice
5 Carpathian Journal of Mathematics
4 Analele Universitații din Timișoara. Seria Științe Matematice-Fizice
3 BIT
3 Linear Algebra and its Applications
3 Revue d’Analyse Numérique et de Théorie de l’Approximation
3 The Korean Journal of Computational & Applied Mathematics
2 Applied Mathematics and Computation
2 Analele Universității din Timișoara. Seria Matematică-Informatică
2 Buletinul Științific al Universității Politehnica din Timișoara. Seria Matematică-Fizică
2 ZAMM. Zeitschrift für Angewandte Mathematik und Mechanik
2 Proceedings of the Romanian Academy. Series A: Mathematics, Physics, Technical Sciences, Information Science
2 Advanced Modeling and Optimization
2 PAMM. Proceedings in Applied Mathematics and Mechanics
2 ROMAI Journal
2 Annals of the Academy of Romanian Scientists. Mathematics and its Applications
1 Inverse Problems
1 Revue Roumaine de Mathématiques Pures et Appliquées
1 Analele Universității București. Matematică
1 Analele Universității din Timișoara. Științe Matematice
1 Annales Polonici Mathematici
1 Applied Numerical Mathematics
1 Buletinul Institutului Politehnic din Iași. Secția I
1 Revue Roumaine des Sciences Techniques. Série de Mécanique Appliquée
1 Studia Universitatis Babeș-Bolyai. Mathematica
1 Bollettino della Unione Matemàtica Italiana. Serie VII. B
1 SIAM Journal on Scientific Computing
1 ETNA. Electronic Transactions on Numerical Analysis
1 NoDEA. Nonlinear Differential Equations and Applications
1 Analele Universității “Ovidius” Constanța. Seria: Matematică
1 Computer Science Journal of Moldova
1 Academia Republicii Populare Romîne, Studii și Cercetări Matematice
1 Monografii Matematice (Timișoara)
1 Inverse Problems and Imaging
1 Journal of Applied Mathematics & Informatics
1 Nonlinear Analysis. Theory, Methods & Applications

Publications by Year

Citations contained in zbMATH Open

43 Publications have been cited 189 times in 121 Documents Cited by Year
Extensions of block-projections methods with relaxation parameters to inconsistent and rank-deficient least-squares problems. Zbl 1005.65038
Popa, Constantin
20
1998
Least-squares solution of overdetermined inconsistent linear systems using Kaczmarz’s relaxation. Zbl 0830.65027
Popa, Constantin
18
1995
Convergence rates for Kaczmarz-type algorithms. Zbl 1398.65049
Popa, Constantin
17
2018
Sur l’équation fonctionnelle \(f(x+yf(x)) = f(x)f(y)\). Zbl 0141.32804
Popa, C. G.
16
1965
Single projection Kaczmarz extended algorithms. Zbl 1376.65062
Petra, Stefania; Popa, Constantin
15
2016
On Kaczmarz’s projection iteration as a direct solver for linear least squares problems. Zbl 1238.65031
Popa, C.; Preclik, T.; Köstler, H.; Rüde, U.
9
2012
A fast Kaczmarz-Kovarik algorithm for consistent least-squares problems. Zbl 0970.65036
Popa, Constantin
7
2001
Existence and uniqueness of the dynamic programming equation in Hilbert space. Zbl 0508.49024
Barbu, V.; Da Prato, G.; Popa, C.
7
1983
A Kaczmarz-Kovarik algorithm for symmetric ill-conditioned matrices. Zbl 1120.65318
Popa, Constantin
6
2004
Block-projections algorithms with blocks containing mutually orthogonal rows and columns. Zbl 1126.65307
Popa, Constantin
6
1999
Extended and constrained diagonal weighting algorithm with application to inverse problems in image reconstruction. Zbl 1191.94022
Popa, Constantin
5
2010
Characterization of the solutions set of inconsistent least-squares problems by an extended Kaczmarz algorithm. Zbl 0920.65023
Popa, Constantin
5
1999
Mesh independence of the condition number of discrete Galerkin systems by preconditioning. Zbl 0828.65053
Popa, Constantin
4
1994
Preconditioning conjugate gradient method for nonsymmetric systems. Zbl 0846.65010
Popa, Constantin
4
1995
Han-type algorithms for inconsistent systems of linear inequalities – a unified approach. Zbl 1338.65163
Popa, C.; Şerban, C.
4
2014
A hybrid Kaczmarz-conjugate gradient algorithm for image reconstruction. Zbl 1194.94038
Popa, Constantin
3
2010
A method for improving orthogonality of rows and columns of matrices. Zbl 1005.65039
Popa, Constantin
3
2001
Projections and preconditioning for inconsistent least-squares problems. Zbl 1005.65037
Evans, David J.; Popa, Constantin
3
2001
Penalized least-squares image reconstruction for borehole tomography. Zbl 1182.94007
Popa, Constantin; Zdunek, Rafal
3
2005
Extension of an approximate orthogonalization algorithm to arbitrary rectangular matrices. Zbl 1016.65021
Popa, Constantin
3
2001
Preconditioning by gram matrix approximation for diffusion-convection-reaction equations with discontinuous coefficients. Zbl 1005.68044
Juncu, Gh.; Popa, C.
2
2002
Modified Kovarik algorithm for approximate orthogonalization of arbitrary matrices. Zbl 1022.65045
Popa, Constantin
2
2003
Algebraic multigrid smoothing property of Kaczmarz’s relaxation for general rectangular linear systems. Zbl 1188.65036
Popa, Constantin
2
2008
Preconditioning by approximations of the Gram matrix for convection-diffusion equations. Zbl 0930.65028
Juncu, Gh.; Popa, C.
2
1998
Constrained Kaczmarz extended algorithm for image reconstruction. Zbl 1157.65022
Popa, Constantin
2
2008
Hamilton-Jacobi equations and synthesis of optimal bilinear controls in Hilbert spaces. Zbl 0647.93039
Aniculaesei, G.; Popa, C.
2
1987
A general extending and constraining procedure for linear iterative methods. Zbl 1256.65027
Nicola, Aurelian; Petra, Stefania; Popa, Constantin; Schnörr, Christoph
2
2012
Family constraining of iterative algorithms. Zbl 1297.65056
Censor, Yair; Pantelimon, Ioana; Popa, Constantin
2
2014
Interpolation and related coarsening techniques for the algebraic multigrid method. Zbl 0809.65116
Golubovici, G.; Popa, C.
1
1994
Numerical extremal solutions for a mixed problem with singular \({\phi}\)-Laplacian. Zbl 1305.34037
Jebelean, Petru; Popa, Constantin; Şerban, Călin
1
2014
Numerical solutions to singular \(\phi\)-Laplacian with Dirichlet boundary conditions. Zbl 1323.65084
Jebelean, Petru; Popa, Constantin
1
2014
Modified Han algorithm for inconsistent linear inequalities. Zbl 1349.65192
Carp, Doina; Popa, Constantin; Serban, Cristina
1
2015
Direct and iterative Kaczmarz-like solvers. Zbl 1073.65522
Popa, Constantin
1
2002
A new version of Kovarik’s approximate orthogonalization algorithm without matrix inversion. Zbl 1085.65038
Petcu, D.; Popa, C.
1
2005
Extensions of the augmented block Cimmino method to the solution of full rank rectangular systems. Zbl 1470.05101
Dumitrasc, Andrei; Leleux, Philippe; Popa, Constantin; Ruede, Ulrich; Ruiz, Daniel
1
2021
An iterative algorithm for approximate orthogonalisation of symmetric matrices. Zbl 1053.65029
Mohr, M.; Popa, C.; Rüde, U.
1
2004
Supplementary projections for the acceleration of Kaczmarz algorithm. Zbl 1410.65117
Pomparău, I.; Popa, C.
1
2014
A note on Kaczmarz algorithm with remotest set control sequence. Zbl 1438.65054
Popa, Constantin
1
2018
On remotest set and random controls in Kaczmarz algorithm. Zbl 1438.65055
Popa, Constantin
1
2018
Kaczmarz extended versus augmented system solution in image reconstruction. Zbl 1265.65068
Nicola, Aurelian; Popa, Constantin
1
2010
Constrained SART algorithm for inverse problems in image reconstruction. Zbl 1272.65033
Grecu, Lacramioara; Popa, Constantin
1
2013
Constraining by a family of strictly nonexpansive idempotent functions with applications in image reconstruction. Zbl 1273.65035
Pantelimon, Ioana; Popa, Constantin
1
2013
Regularized solution of LCP problems with application to rigid body dynamics. Zbl 1322.65069
Popa, Constantin; Preclik, Tobias; Rüde, Ulrich
1
2015
Extensions of the augmented block Cimmino method to the solution of full rank rectangular systems. Zbl 1470.05101
Dumitrasc, Andrei; Leleux, Philippe; Popa, Constantin; Ruede, Ulrich; Ruiz, Daniel
1
2021
Convergence rates for Kaczmarz-type algorithms. Zbl 1398.65049
Popa, Constantin
17
2018
A note on Kaczmarz algorithm with remotest set control sequence. Zbl 1438.65054
Popa, Constantin
1
2018
On remotest set and random controls in Kaczmarz algorithm. Zbl 1438.65055
Popa, Constantin
1
2018
Single projection Kaczmarz extended algorithms. Zbl 1376.65062
Petra, Stefania; Popa, Constantin
15
2016
Modified Han algorithm for inconsistent linear inequalities. Zbl 1349.65192
Carp, Doina; Popa, Constantin; Serban, Cristina
1
2015
Regularized solution of LCP problems with application to rigid body dynamics. Zbl 1322.65069
Popa, Constantin; Preclik, Tobias; Rüde, Ulrich
1
2015
Han-type algorithms for inconsistent systems of linear inequalities – a unified approach. Zbl 1338.65163
Popa, C.; Şerban, C.
4
2014
Family constraining of iterative algorithms. Zbl 1297.65056
Censor, Yair; Pantelimon, Ioana; Popa, Constantin
2
2014
Numerical extremal solutions for a mixed problem with singular \({\phi}\)-Laplacian. Zbl 1305.34037
Jebelean, Petru; Popa, Constantin; Şerban, Călin
1
2014
Numerical solutions to singular \(\phi\)-Laplacian with Dirichlet boundary conditions. Zbl 1323.65084
Jebelean, Petru; Popa, Constantin
1
2014
Supplementary projections for the acceleration of Kaczmarz algorithm. Zbl 1410.65117
Pomparău, I.; Popa, C.
1
2014
Constrained SART algorithm for inverse problems in image reconstruction. Zbl 1272.65033
Grecu, Lacramioara; Popa, Constantin
1
2013
Constraining by a family of strictly nonexpansive idempotent functions with applications in image reconstruction. Zbl 1273.65035
Pantelimon, Ioana; Popa, Constantin
1
2013
On Kaczmarz’s projection iteration as a direct solver for linear least squares problems. Zbl 1238.65031
Popa, C.; Preclik, T.; Köstler, H.; Rüde, U.
9
2012
A general extending and constraining procedure for linear iterative methods. Zbl 1256.65027
Nicola, Aurelian; Petra, Stefania; Popa, Constantin; Schnörr, Christoph
2
2012
Extended and constrained diagonal weighting algorithm with application to inverse problems in image reconstruction. Zbl 1191.94022
Popa, Constantin
5
2010
A hybrid Kaczmarz-conjugate gradient algorithm for image reconstruction. Zbl 1194.94038
Popa, Constantin
3
2010
Kaczmarz extended versus augmented system solution in image reconstruction. Zbl 1265.65068
Nicola, Aurelian; Popa, Constantin
1
2010
Algebraic multigrid smoothing property of Kaczmarz’s relaxation for general rectangular linear systems. Zbl 1188.65036
Popa, Constantin
2
2008
Constrained Kaczmarz extended algorithm for image reconstruction. Zbl 1157.65022
Popa, Constantin
2
2008
Penalized least-squares image reconstruction for borehole tomography. Zbl 1182.94007
Popa, Constantin; Zdunek, Rafal
3
2005
A new version of Kovarik’s approximate orthogonalization algorithm without matrix inversion. Zbl 1085.65038
Petcu, D.; Popa, C.
1
2005
A Kaczmarz-Kovarik algorithm for symmetric ill-conditioned matrices. Zbl 1120.65318
Popa, Constantin
6
2004
An iterative algorithm for approximate orthogonalisation of symmetric matrices. Zbl 1053.65029
Mohr, M.; Popa, C.; Rüde, U.
1
2004
Modified Kovarik algorithm for approximate orthogonalization of arbitrary matrices. Zbl 1022.65045
Popa, Constantin
2
2003
Preconditioning by gram matrix approximation for diffusion-convection-reaction equations with discontinuous coefficients. Zbl 1005.68044
Juncu, Gh.; Popa, C.
2
2002
Direct and iterative Kaczmarz-like solvers. Zbl 1073.65522
Popa, Constantin
1
2002
A fast Kaczmarz-Kovarik algorithm for consistent least-squares problems. Zbl 0970.65036
Popa, Constantin
7
2001
A method for improving orthogonality of rows and columns of matrices. Zbl 1005.65039
Popa, Constantin
3
2001
Projections and preconditioning for inconsistent least-squares problems. Zbl 1005.65037
Evans, David J.; Popa, Constantin
3
2001
Extension of an approximate orthogonalization algorithm to arbitrary rectangular matrices. Zbl 1016.65021
Popa, Constantin
3
2001
Block-projections algorithms with blocks containing mutually orthogonal rows and columns. Zbl 1126.65307
Popa, Constantin
6
1999
Characterization of the solutions set of inconsistent least-squares problems by an extended Kaczmarz algorithm. Zbl 0920.65023
Popa, Constantin
5
1999
Extensions of block-projections methods with relaxation parameters to inconsistent and rank-deficient least-squares problems. Zbl 1005.65038
Popa, Constantin
20
1998
Preconditioning by approximations of the Gram matrix for convection-diffusion equations. Zbl 0930.65028
Juncu, Gh.; Popa, C.
2
1998
Least-squares solution of overdetermined inconsistent linear systems using Kaczmarz’s relaxation. Zbl 0830.65027
Popa, Constantin
18
1995
Preconditioning conjugate gradient method for nonsymmetric systems. Zbl 0846.65010
Popa, Constantin
4
1995
Mesh independence of the condition number of discrete Galerkin systems by preconditioning. Zbl 0828.65053
Popa, Constantin
4
1994
Interpolation and related coarsening techniques for the algebraic multigrid method. Zbl 0809.65116
Golubovici, G.; Popa, C.
1
1994
Hamilton-Jacobi equations and synthesis of optimal bilinear controls in Hilbert spaces. Zbl 0647.93039
Aniculaesei, G.; Popa, C.
2
1987
Existence and uniqueness of the dynamic programming equation in Hilbert space. Zbl 0508.49024
Barbu, V.; Da Prato, G.; Popa, C.
7
1983
Sur l’équation fonctionnelle \(f(x+yf(x)) = f(x)f(y)\). Zbl 0141.32804
Popa, C. G.
16
1965
all top 5

Cited by 143 Authors

22 Popa, Constantin Gh.
10 Needell, Deanna
7 Ostaszewski, Adam J.
5 Abbasi, Mokhtar
5 Li, Weiguo
5 Nikazad, Touraj
4 Bao, Wendi
4 Bingham, Nicholas Hugh
4 Faggian, Silvia
4 Gozzi, Fausto
4 Haddock, Jamie
3 Echebest, Nélida E.
3 Elfving, Tommy
3 Goberna, Miguel Angel
3 Guardarucci, M. T.
3 Jabłońska, Eliza
3 Juncu, Gheorghe
3 Lv, Zhonglu
3 Ma, Anna
3 Rüde, Ulrich
3 Scolnik, Hugo D.
3 Steinerberger, Stefan
3 Wang, Fang
2 Bai, Zhongzhi
2 Chen, Jiaqi
2 Chudziak, Jacek
2 Du, Yishu
2 Hansen, Per Christian
2 Hayami, Ken
2 Hochstenbach, Michiel E.
2 Huang, Zhengda
2 Islam, Md. Saiful
2 Kang, Chuangang
2 Loizou, Nicolas
2 Mohr, Marcus
2 Molitor, Denali
2 Morikuni, Keiichi
2 Morshed, Muhammad Sarowar
2 Noor-E-Alam, Muhammad
2 Pantelimon, Ioana
2 Petra, Stefania
2 Preclik, Tobias
2 Ramdas, Aaditya K.
2 Richtárik, Peter
2 Steinbach, Olaf
2 van Lith, Bart S.
2 Volle, Michel
2 Wu, Wenting
2 Yang, Huidong
2 Yin, Junfeng
2 Zheng, Ning
1 Aczél, János Dezső
1 Aniculaesei, Gheorghe
1 Barbu, Viorel
1 Bilić, Nataša
1 Briskman, Jonathan
1 Cabada, Alberto
1 Censor, Yair
1 Chen, Qiao
1 Chung, Julianne M.
1 Chung, Matthias
1 Daas, Hussam Al
1 Davideanu, Cătălina
1 De Loera, Jesús A.
1 Dhombres, Jean G.
1 Du, Kui
1 Dumitrescu, Bogdan Alexandru
1 Eibl, Sebastian
1 Esmaeili, Hamid
1 Evans, David John
1 Fabbri, Giorgio
1 Fahs, Amin
1 Fahs, Hassane
1 Favini, Angelo
1 Gower, Robert Mansel
1 Guan, Ying-Jun
1 Guo, Yumeng
1 Hefny, Ahmed
1 Henson, Van Emden
1 Herman, Gabor T.
1 Hiriart-Urruty, Jean-Baptiste
1 Ivanov, Andreĭ Aleksandrovich
1 Jebelean, Petru
1 Jiao, Xiangmin
1 Jolivet, Pierre
1 Jørgensen, Palle E. T.
1 Karimpour, Mehdi
1 Kisela, Tomáš
1 Kort, Peter M.
1 Köstler, Harald
1 Langer, Ulrich
1 Lei, Yuan
1 Li, Hanyu
1 Lin, Chuan
1 Liu, Ji
1 Liu, Xinguo
1 López-Cerdá, Marco Antonio
1 Meier Yang, Ulrike
1 Mirzapour, Mahdi
1 Moorman, Jacob D.
...and 43 more Authors
all top 5

Cited in 56 Serials

9 SIAM Journal on Scientific Computing
8 International Journal of Computer Mathematics
7 Linear Algebra and its Applications
6 BIT
6 Numerical Algorithms
5 Journal of Mathematical Analysis and Applications
5 Aequationes Mathematicae
4 Journal of Computational and Applied Mathematics
4 Mathematics and Computers in Simulation
4 SIAM Journal on Matrix Analysis and Applications
3 Applied Mathematics and Computation
3 Mathematical Programming. Series A. Series B
2 Inverse Problems
2 Mathematics of Computation
2 Calcolo
2 Journal of Mathematical Economics
2 Indagationes Mathematicae. New Series
2 Computational Optimization and Applications
2 Journal of Inverse and Ill-Posed Problems
2 International Transactions in Operational Research
2 Mathematical Population Studies
2 Results in Applied Mathematics
1 Computers & Mathematics with Applications
1 Journal of the Franklin Institute
1 Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
1 Applied Mathematics and Optimization
1 Archiv der Mathematik
1 Journal of Optimization Theory and Applications
1 Mathematica Slovaca
1 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods
1 Numerische Mathematik
1 Quarterly of Applied Mathematics
1 Rendiconti del Seminario Matematico della Università di Padova
1 SIAM Journal on Numerical Analysis
1 Acta Mathematica Hungarica
1 Applied Numerical Mathematics
1 Computational Mechanics
1 Applied Mathematics Letters
1 Journal of Global Optimization
1 Journal of Mathematical Imaging and Vision
1 International Journal of Numerical Methods for Heat & Fluid Flow
1 ETNA. Electronic Transactions on Numerical Analysis
1 NoDEA. Nonlinear Differential Equations and Applications
1 Vietnam Journal of Mathematics
1 Optimization Methods & Software
1 Communications in Nonlinear Science and Numerical Simulation
1 Computational Methods in Applied Mathematics
1 Applied Mathematics E-Notes
1 Discrete and Continuous Dynamical Systems. Series S
1 Set-Valued and Variational Analysis
1 East Asian Journal on Applied Mathematics
1 Nonlinear Analysis. Theory, Methods & Applications
1 Advances in Operator Theory
1 Electronic Research Archive
1 SN Operations Research Forum
1 SIAM Journal on Mathematics of Data Science

Citations by Year