Constantin Popa

According to our database, Constantin Popa authored at least 28 papers between 1995 and 2021.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2021

Extensions of the Augmented Block Cimmino Method to the Solution of Full Rank Rectangular Systems.

Andrei Dumitrasc, Philippe Leleux, Constantin Popa, Ulrich Rüde, Daniel Ruiz

SIAM J. Sci. Comput., 2021

2019

Correction to: convergence rates for Kaczmarz-type algorithms.

Constantin Popa

Numer. Algorithms, 2019

On numerical solution of full rank linear systems.

Andrei Dumitrasc, Philippe Leleux, Constantin Popa, Daniel Ruiz, Ulrich Rüde

CoRR, 2019

The permutation entropy and its applications on fire tests data.

Flavia-Corina Mitroi-Symeonidis, Ion Anghel, Octavian Lalu, Constantin Popa

CoRR, 2019

2018

Convergence rates for Kaczmarz-type algorithms.

Constantin Popa

Numer. Algorithms, 2018

Splitting methods for the numerical solution of multi-component mass transfer problems.

Gheorghe Juncu, Aurelian Nicola, Constantin Popa

Math. Comput. Simul., 2018

2017

Erratum to: Single projection Kaczmarz extended algorithms.

Stefania Petra, Constantin Popa

Numer. Algorithms, 2017

2016

Single projection Kaczmarz extended algorithms.

Stefania Petra, Constantin Popa

Numer. Algorithms, 2016

2015

Regularized solution of LCP problems with application to rigid body dynamics.

Constantin Popa, Tobias Preclik, Ulrich Rüde

Numer. Algorithms, 2015

2014

Numerical solutions to singular ϕ-Laplacianwith Dirichlet boundary conditions.

Petru Jebelean, Constantin Popa

Numer. Algorithms, 2014

Family constraining of iterative algorithms.

Yair Censor, Ioana Pantelimon, Constantin Popa

Numer. Algorithms, 2014

Han-type algorithms for inconsistent systems of linear inequalities - A unified approach.

Constantin Popa, Cristina Serban

Appl. Math. Comput., 2014

Supplementary projections for the acceleration of Kaczmarz algorithm.

I. Pomparau, Constantin Popa

Appl. Math. Comput., 2014

2012

A general extending and constraining procedure for linear iterative methods.

Aurelian Nicola, Stefania Petra, Constantin Popa, Christoph Schnörr

Int. J. Comput. Math., 2012

2010

A hybrid Kaczmarz-Conjugate Gradient algorithm for image reconstruction.

Constantin Popa

Math. Comput. Simul., 2010

Iterative solvers for Tikhonov regularization of dense inverse problems.

Constantin Popa

Int. J. Comput. Math., 2010

2008

On numerical solution of arbitrary symmetric linear systems by approximate orthogonalization.

Constantin Popa

Math. Comput. Simul., 2008

Numerical solution of symmetric least-squares problems with an inversion-free Kovarik-type algorithm.

Marcus Mohr, Constantin Popa

Int. J. Comput. Math., 2008

2005

A new version of Kovarik's approximate orthogonalization algorithm without matrix inversion.

Dana Petcu, Constantin Popa

Int. J. Comput. Math., 2005

2004

Kaczmarz extended algorithm for tomographic image reconstruction from limited-data.

Constantin Popa, Rafal Zdunek

Math. Comput. Simul., 2004

An iterative algorithm for approximate orthogonalisation of symmetric matrices.

Marcus Mohr, Constantin Popa, Ulrich Rüde

Int. J. Comput. Math., 2004

2003

Modified Kovarik Algorithm for Approximate Orthogonalization of Arbitrary Matrices.

Constantin Popa

Int. J. Comput. Math., 2003

2002

Preconditioning by Gram matrix approximation for diffusion-convection-reaction equations with discontinuous coefficients.

Gheorghe Juncu, Constantin Popa

Math. Comput. Simul., 2002

2001

A method for improving orthogonality of rows and columns of matrices.

Constantin Popa

Int. J. Comput. Math., 2001

2000

The numerical identification of the mechanical systems with respect to natural frequences.

Constantin Popa, A. Sharaniuk

Comput. Sci. J. Moldova, 2000

1998

Mesh independence principle for nonlinear equations on hilbert spaces by preconditioning.

Constantin Popa

Int. J. Comput. Math., 1998

1995

Least-squares solution of overdetermined inconsistent linear systems using kaczmarz's relaxation.

Constantin Popa

Int. J. Comput. Math., 1995

Preconditioning conjugate gradient method for nonsymmetric systems.

Constantin Popa

Int. J. Comput. Math., 1995