Activities per year
Activities
- 1 - 50 out of 54 results
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The Stiefel manifold of orthogonal frames revisited: Recent algorithmic and theoretical advances.
Zimmermann, R. (Keynote speaker)
14. Jan 2025 → 16. Jan 2025Activity: Talks and presentations › Conference presentations
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Nordic Numerical Linear Algebra Meeting 2024
Zimmermann, R. (Organizer)
17. Jun 2024 → 18. Jun 2024Activity: Attending an event › Organisation or participation in workshops, courses or seminars
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Don't stray from the (shortest) path and be home before the cut point: On the injectivity radius on the Grassmann and the Stiefel manifold
Zimmermann, R. (Guest lecturer)
5. Jun 2024Activity: Talks and presentations › Conference presentations
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Multivariate Hermite Interpolation On Matrix Manifolds
Zimmermann, R. (Speaker)
16. May 2024Activity: Talks and presentations › Conference presentations
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"Commutative means flat: The impact of curvature on the calculation of canonical Stiefel coordinates."
Zimmermann, R. (Guest lecturer)
30. Jan 2024Activity: Talks and presentations › Guest lectures, external teaching and course activities at other universities
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BIT Numerical Mathematics (Journal)
Zimmermann, R. (Associate editor)
1. Jan 2024 → …Activity: Editorial work and peer review › Editor of research journal › Research
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Data processing on manifolds: Some basic ideas of Riemannian computing with applications
Zimmermann, R. (Guest lecturer)
15. Nov 2023 → 17. Nov 2023Activity: Talks and presentations › Conference presentations
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On classical and symplectic Stiefel and Grassmann manifolds and their applications in Riemannian interpolation, optimization, and model reduction
Zimmermann, R. (Keynote speaker)
5. Oct 2023 → 6. Oct 2023Activity: Talks and presentations › Conference presentations
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On classical and symplectic Stiefel and Grassmann manifolds and their applications in Riemannian interpolation, optimization, and model reduction
Zimmermann, R. (Keynote speaker)
5. Oct 2023 → 6. Oct 2023Activity: Talks and presentations › Conference presentations
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10th International Congress onIndustrial and Applied Mathematics.
Zimmermann, R. (Organizer) & Sharon, N. (Organizer)
20. Aug 2023 → 25. Aug 2023Activity: Attending an event › Conference organisation or participation
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Interpolating on the Stiefel manifold under a one-parameter family of metrics.
Zimmermann, R. (Guest lecturer)
29. Jun 2022 → 1. Jul 2022Activity: Talks and presentations › Conference presentations
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An elementary approach to constructing pseudo-cubic C^1-splines on the Stiefel manifold
Zimmermann, R. (Guest lecturer)
16. May 2022 → 18. May 2022Activity: Talks and presentations › Guest lectures, external teaching and course activities at other universities
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The real symplectic Stiefel and Grassmann manifolds: metrics, geodesics and applications
Zimmermann, R. (Speaker) & Bendokat, T. (Co-author)
11. Apr 2022 → 12. Apr 2022Activity: Talks and presentations › Conference presentations
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Efficient algorithms for computing the Riemannian normal coordinates on the Stiefel manifold
Zimmermann, R. (Guest lecturer)
14. Mar 2022Activity: Talks and presentations › Guest lectures, external teaching and course activities at other universities
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How to interpolate low-rank matrix decompositions? Computing the Riemannian normal coordinates in the space of orthogonal frames
Zimmermann, R. (Guest lecturer)
27. Jan 2022Activity: Talks and presentations › Guest lectures, external teaching and course activities at other universities
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External referee: Dutch Research Council (NWO)
Zimmermann, R. (Participant)
2022 → …Activity: Other activities › Other
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Digital Signal Processing (Journal)
Zimmermann, R. (Peer reviewer)
2021 → …Activity: Editorial work and peer review › Peer review of manuscripts › Research
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External referee: Alexander von Humboldt Foundation
Zimmermann, R. (Participant)
2021 → …Activity: Other activities › Other
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Journal of Optimization Theory and Applications (Journal)
Zimmermann, R. (Peer reviewer)
2021 → …Activity: Editorial work and peer review › Peer review of manuscripts › Research
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Mathematics of Computation (Journal)
Zimmermann, R. (Peer reviewer)
2020 → …Activity: Editorial work and peer review › Peer review of manuscripts › Research
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4th Workshop on Model Reduction of Complex Dynamical Systems
Zimmermann, R. (Panel member)
28. Aug 2019 → 30. Aug 2019Activity: Attending an event › Conference organisation or participation
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Efficient parametric solutions to the Black-Scholes model
Zimmermann, R. (Speaker)
23. Aug 2019Activity: Talks and presentations › Conference presentations
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Faster point selection schemes for masked nonlinear model reduction
Zimmermann, R. (Speaker) & Bekemeyer, P. (Other)
19. Jul 2019Activity: Talks and presentations › Conference presentations
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Hermite interpolation on matrix manifolds and applications in model reduction
Zimmermann, R. (Speaker)
16. Jul 2019Activity: Talks and presentations › Conference presentations
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Advances in Computational Mathematics (Journal)
Zimmermann, R. (Peer reviewer)
2019Activity: Editorial work and peer review › Peer review of manuscripts › Research
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Computer Methods in Applied Mechanics and Engineering (Journal)
Zimmermann, R. (Peer reviewer)
2019Activity: Editorial work and peer review › Peer review of manuscripts › Research
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MathSciNet (Journal)
Zimmermann, R. (Peer reviewer)
2019Activity: Editorial work and peer review › Peer review of manuscripts › Communication
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SIAM Journal on Matrix Analysis and Applications (Journal)
Zimmermann, R. (Peer reviewer)
2019Activity: Editorial work and peer review › Peer review of manuscripts › Research
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Springer (Publisher)
Zimmermann, R. (Editor)
2019 → 2020Activity: Editorial work and peer review › Editor of unfinished research anthology/collection › Research
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Rank-one updates for orthogonal matrix decompositions
Zimmermann, R. (Speaker)
12. Oct 2018Activity: Talks and presentations › Conference presentations
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A Note on Rank-One Subspace Modifications and some Remarks on the Canonical Stiefel Logarithm
Zimmermann, R. (Speaker)
22. Apr 2018 → 28. Apr 2018Activity: Talks and presentations › Conference presentations
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Journal of Aerospace Engineering (Journal)
Zimmermann, R. (Peer reviewer)
2018Activity: Editorial work and peer review › Peer review of manuscripts › Research
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SIAM Journal on Scientific Computing (Journal)
Zimmermann, R. (Peer reviewer)
2018Activity: Editorial work and peer review › Peer review of manuscripts › Research
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SIAM Journal on Scientific Computing (Journal)
Zimmermann, R. (Peer reviewer)
2018Activity: Editorial work and peer review › Peer review of manuscripts › Research
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Structural and Multidisciplinary Optimization (Journal)
Zimmermann, R. (Peer reviewer)
2018Activity: Editorial work and peer review › Peer review of manuscripts › Research
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Parametrization techniques for reduced-order bases and subspaces
Zimmermann, R. (Speaker)
26. Sept 2017Activity: Talks and presentations › Conference presentations
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European Conference on Numerical Mathematics and Advanced Applications, ENUMATH 2017
Zimmermann, R. (Organizer), Benner, P. (Organizer), Heiland, J. (Organizer) & Stoll, M. (Organizer)
25. Sept 2017 → 29. Sept 2017Activity: Attending an event › Organisation or participation in workshops, courses or seminars
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MathSciNet (Journal)
Zimmermann, R. (Peer reviewer)
Jun 2017Activity: Editorial work and peer review › Peer review of manuscripts › Communication
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Advances in Computational Mathematics (Journal)
Zimmermann, R. (Editor)
May 2017 → May 2018Activity: Editorial work and peer review › Peer review of manuscripts › Research
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3rd Workshop on Model Reduction of Complex Dynamical Systems
Zimmermann, R. (Organizer)
11. Jan 2017 → 13. Jan 2017Activity: Attending an event › Organisation or participation in workshops, courses or seminars
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Aerospace Science and Technology (Journal)
Zimmermann, R. (Peer reviewer)
2017Activity: Editorial work and peer review › Peer review of manuscripts › Research
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Aerospace Science and Technology (Journal)
Zimmermann, R. (Peer reviewer)
2017 → …Activity: Editorial work and peer review › Peer review of manuscripts › Research
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International Journal for Numerical Methods in Engineering (Journal)
Zimmermann, R. (Peer reviewer)
2017Activity: Editorial work and peer review › Peer review of manuscripts › Research
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Journal of Computational and Applied Mathematics (Journal)
Zimmermann, R. (Peer reviewer)
2017Activity: Editorial work and peer review › Peer review of manuscripts › Research
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SIAM Journal on Matrix Analysis and Applications (Journal)
Zimmermann, R. (Peer reviewer)
2017Activity: Editorial work and peer review › Peer review of manuscripts › Research
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Structural and Multidisciplinary Optimization (Journal)
Zimmermann, R. (Peer reviewer)
2017Activity: Editorial work and peer review › Peer review of manuscripts › Research
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A Matrix-Algebraic Algorithm for the Riemannian Stiefel Logarithm
Zimmermann, R. (Speaker)
16. Sept 2016Activity: Talks and presentations › Conference presentations
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International Journal for Numerical Methods in Engineering (Journal)
Zimmermann, R. (Peer reviewer)
2016Activity: Editorial work and peer review › Peer review of manuscripts › Research
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International Journal for Numerical Methods in Engineering (Journal)
Zimmermann, R. (Peer reviewer)
2016Activity: Editorial work and peer review › Peer review of manuscripts › Research
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International Journal for Numerical Methods in Engineering (Journal)
Zimmermann, R. (Peer reviewer)
2016Activity: Editorial work and peer review › Peer review of manuscripts › Research