Akwum Onwunta
Title
Cited by
Cited by
Year
Low-rank solvers for unsteady Stokes–Brinkman optimal control problem with random data
P Benner, S Dolgov, A Onwunta, M Stoll
Computer Methods in Applied Mechanics and Engineering 304, 26-54, 2016
422016
Block-diagonal preconditioning for optimal control problems constrained by PDEs with uncertain inputs
P Benner, A Onwunta, M Stoll
SIAM Journal on Matrix Analysis and Applications 37 (2), 491-518, 2016
312016
Low-rank solution of unsteady diffusion equations with stochastic coefficients
P Benner, A Onwunta, M Stoll
SIAM/ASA Journal on Uncertainty Quantification 3 (1), 622-649, 2015
292015
Validating structural credit portfolio models
M Kalkbrener, A Onwunta
Model risk—identification, measurement and management. Risk Books, London …, 2010
152010
Solving optimal control problems governed by random Navier-Stokes equations using low-rank methods
P Benner, S Dolgov, A Onwunta, M Stoll
arXiv preprint arXiv:1703.06097, 2017
82017
A low-rank inexact Newton–Krylov method for stochastic eigenvalue problems
P Benner, A Onwunta, M Stoll
Computational Methods in Applied Mathematics 19 (1), 5-22, 2019
72019
Threshold accepting for credit risk assessment and validation
M Lyra, A Onwunta, P Winker
Journal of Banking Regulation 16 (2), 130-145, 2015
52015
On the existence and uniqueness of the solution of a parabolic optimal control problem with uncertain inputs
P Benner, A Onwunta, M Stoll
arXiv preprint arXiv:1809.10645, 2018
42018
Reduced-order modeling for nonlinear Bayesian statistical inverse problems
HC Elman, A Onwunta
arXiv preprint arXiv:1909.02539, 2019
12019
COMISEF WORKING PAPERS SERIES
M Lyra, A Onwunta, P Winker
12010
On the regularity of refinable functions
AA Onwunta
Stellenbosch: University of Stellenbosch, 2006
12006
Low‐rank solution of an optimal control problem constrained by random Navier‐Stokes equations
P Benner, S Dolgov, A Onwunta, M Stoll
International Journal for Numerical Methods in Fluids, 2020
2020
Low-rank iterative solvers for large-scale stochastic Galerkin linear systems
A Onwunta
Otto-von-Guericke Universität Magdeburg, 2016
2016
Block-Diagonal Preconditioning for Optimal Control Problems Constrained by PDEs with Uncertain Inputs
A Onwunta
SIAM Conference on Uncertainty Quantification, 2016
2016
Efficient solvers for optimal control problems constrained by PDEs with uncertain inputs
A Onwunta, P Benner, M Stoll
Workshop on Direct and Inverse Problems for PDEs with Random Coefficients, 2016
2016
Fast solvers for optimal control problems constrained by PDEs with uncertain inputs
P Benner, A Onwunta, M Stoll
19th European Conference on Mathematics for Industry, 374, 2016
2016
All-at-once Approach to Optimal Control Problems Constrained by PDEs with Uncertain Inputs
A Onwunta, M Stoll, P Benner
SIAM Conference on Computational Science and Engineering, 2015
2015
On the Holder regularity of refinable functions
A Onwunta
South African Mathematical Society, Rhodes University, Mathematics (Pure and …, 2005
2005
The Regularity of Refinable Functions with Positive Masks
AA Onwunta
University of Stellenbosch South Africa, 2004
2004
MPI Magdeburg: Computational Methods in Systems and Control Theory: Teaching: MOR
MI Ahmad, A Barker, U Baur, P Benner, J Bosch, Z Bujanovic, J Denißen, ...
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