Contact

Director

Prof. Dr Andreas Stein

+49 (0)441 798-3232

W1 2-216

Office

IfM Office

+49 (0)441 798-3004

Antje Hagen

+49 (0)441 798-3247

W1 1-115

Frauke Wehber

+49 (0)441 798-3247

W1 1-115

Desislava German

+49 (0)441 798-3241

W1 1-120

Equal Opportunities Officer

Carolin Lena Danzer

+49 (0)441 798-3227

W1 1-104

Dr Birte Julia Specht

+49 (0)441 798-3607

W1 1-110

Dr Sandra Stein

+49 (0)441 798-3237

W1 2-214

Ombudsperson for issues of
discrimination and sexual harassment

Antje Hagen

+49 (0)441 798-3247

W1 1-115

IT Officer

Veronika Viets

+49 (0) 441 798-3236

W1 1-116

Address

University of Oldenburg
Institute of Mathematics
Campus Wechloy
Carl-von-Ossietzky-Str. 9-11
26129 Oldenburg

How to find us


Bibliography

Bibliography

  1. F. Schöpfer, D. A. Lorenz, L. Tondji, and M. Winkler. Extended randomised kaczmarz method for sparse least squares and impulsive noise problems. Linear Algebra and its Applications, 52:132-154, 2022.
  2. F. Schöpfer and A. Chernov. Certified efficient global roundness evaluation. Journal of Optimisation Theory and Applications, 186(1):169-190, 2020.
  3. F. Heber, F. Schöpfer, and T. Schuster. Acceleration of sequential subspace optimisation in Banach spaces by orthogonal search directions. Journal of Computational and Applied Mathematics, 345:1-22, 2019.
  4. D. A. Lorenz, S. Rose, and F. Schöpfer. The randomised Kaczmarz method with mismatched adjoint. BIT Numerical Mathematics, pages 1-20, 2018. doi:10.1007/s10543-018-0717-x
  5. F. Schöpfer, and D. A. Lorenz. Linear convergence of the randomised sparse Kaczmarz method. Mathematical Programming, 2018. doi:10.1007/s10107-017-1229-1.
  6. F. Schöpfer. Linear convergence of descent methods for the unconstrained minimisation of restricted strongly convex functions. SIAM J. Optim, 26(3):1883-1911, 2016.
  7. L. Siemer, F. Schöpfer, and D. Kleinhans. Cost-optimal operation of energy storage units: Benefits of a problem-specific approach. Journal of Energy Storage, 6:11-21, 2016.
  8. F. Binder, F. Schöpfer, and T. Schuster. Defect localization in fibre-reinforced composites by computing external volume forces from surface sensor measurements. Inverse Problems, 31(2), 2015.
  9. D. A. Lorenz, S. Wenger, F. Schöpfer, and M. Magnor. A sparse Kaczmarz solver and a linearised Bregman method for online compressed sensing. In 2014 IEEE International Conference on Image Processing (ICIP), pages 1347-1351, 2014.
  10. D. A. Lorenz, F. Schöpfer, and S. Wenger. The linearized Bregman method via split feasibility problems: Analysis and generalisations. SIAM J. Imaging Sciences, 7(2):1237-1262, 2014.
  11. F. Schöpfer, F. Binder, A. Wöstehoff , T. Schuster, S. von Ende, S. Föll, and R. Lam- mering. Accurate determination of dispersion curves of guided waves in plates by applying the matrix pencil method to laser vibrometer measurement data. CEAS Aeronautical Journal, 2013.
  12. F. Schöpfer. Exact regularisation of polyhedral norms. SIAM J. Optim, 22(4):1206-1223, 2012.
  13. T. Schuster, R. Rieder, and F. Schöpfer. The approximate inverse in action: IV. semi-discrete equations in a Banach space setting. Inverse Problems, 28(10), 2012.
  14. F. Schöpfer, F. Binder, A. Wöstehoff , and T. Schuster. A mathematical analysis of the strip element method for the computation of dispersion curves of guided waves in anisotropic layered media. Mathematical Problems in Engineering, 2010.
  15. T. Schuster and F. Schöpfer. Solving linear operator equations in Banach spaces non-iteratively by the method of approximate inverse. Inverse Problems, 26, 2010.
  16. B. Kaltenbacher, F. Schöpfer, and T. Schuster. Iterative methods for nonlinear ill-posed problems in Banach spaces: convergence and applications to parameter identifcation problems. Inverse Problems, 25, 2009.
  17. F. Schöpfer and T. Schuster. Acceleration of the generalized Landweber method in Banach spaces via sequential subspace optimization. Journal of Inverse and Ill-posed Problems, 17(1):91 99, 2009.
  18. F. Schöpfer and T. Schuster. Fast regularising sequential subspace optimization in Banach spaces. Inverse Problems, 25(1), 2009.
  19. F. Schöpfer, T. Schuster, and A. K. Louis. An iterative regularisation method for the solution of the split feasibility problem in Banach spaces. Inverse Problems, 24, 2008.
  20. F. Schöpfer, T. Schuster, and A. K. Louis. Metric and Bregman projections onto affine subspaces and their computation via sequential subspace optimization methods. JIIP, 16(5):479-506, 2008.
  21. T. Bonesky, K. Kazimierski, P. Maass, F. Schöpfer, and T. Schuster. Minimisation of Tikhonov functionals in Banach spaces. Abstract and Applied Analysis, 2008.
  22. F. Schöpfer, A. K. Louis, and T. Schuster. Nonlinear iterative methods for linear ill-posed problems in Banach spaces. Inverse Problems, 22:311-329, 2006.
(Changed: 11 Feb 2026)  Kurz-URL:Shortlink: https://uol.de/p52631en
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