Research output per year
Research output per year
Personal profile
Research areas
- Numeric analysis
- Numerical Linear Algebra
- Matrix Analysis
- Mathematic modelling
- Reduced Order Modelling
- Surrogate Modelling
- Scientific Computing
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Dive into the research topics where Ralf Zimmermann is active. These topic labels come from the works of this person. Together they form a unique fingerprint.
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Collaborations and top research areas from the last five years
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Research output
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Adaptive data-driven probabilistic reduced-order models for parameterized dynamical system
Cheng, K. & Zimmermann, R., 15. Oct 2024, (Accepted/In press) In: SIAM Journal on Scientific Computing. p. 1 38 p.Research output: Contribution to journal › Journal article › Research › peer-review
File59 Downloads (Pure) -
A Grassmann manifold handbook: basic geometry and computational aspects
Bendokat, T., Zimmermann, R. & Absil, P. A., Feb 2024, In: Advances in Computational Mathematics. 50, 1, 51 p., 6.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile73 Downloads (Pure) -
An efficient algorithm for the Riemannian logarithm on the Stiefel manifold for a family of Riemannian metrics
Mataigne, S., Zimmermann, R. & Miolane, N., 19. Mar 2024, (Submitted) In: SIAM Journal on Matrix Analysis and Applications. p. 1-20 20 p.Research output: Contribution to journal › Journal article › Research › peer-review
File19 Downloads (Pure) -
High curvature means low-rank: On the sectional curvature of Grassmann and Stiefel manifolds and the underlying matrix trace inequalities
Zimmermann, R. & Stoye, J., 5. Mar 2024, 23 p. arXiv.Research output: Other contribution › Research
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Multivariate Hermite Interpolation On Riemannian Manifolds
Zimmermann, R. & Bergmann, R., Apr 2024, In: SIAM Journal on Scientific Computing. 46, 2, p. 1276-1297Research output: Contribution to journal › Journal article › Research › peer-review
72 Downloads (Pure)
Activities
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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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Uddannelses- og Forskninisteriet - FNU - FP1 - Optimal Structure-Preserving Model Reduction
Zimmermann, R. (Project participant)
01/09/2023 → 31/08/2026
Project: Research Councils
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Carlsbergfondet - konferencer - Nordic Numerical Linear Algebra Workshop - NNLA 2024 workshop
Zimmermann, R. (Project participant)
01/06/2024 → 30/06/2024
Project: Private Foundations
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DDSA - Danish Data Science Academy - Nordic Numerical Linear Algebra Workshop
Zimmermann, R. (Project participant)
01/06/2024 → 30/06/2024
Project: Other Government Institutions
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Austrian Research Promotion Agency - Induheat
Zimmermann, R. (Project participant)
01/03/2021 → 29/02/2024
Project: Research
Prizes
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Best Paper Award
Bendokat, T. (Recipient) & Zimmermann, R. (Recipient), 23. Jul 2021
Prize: Prizes, scholarships, distinctions
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Airbus Flight Physics Innovation Recognition Event 2010
Zimmermann, R. (Recipient), 2010
Prize: Prizes, scholarships, distinctions
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Teaching & Supervision
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MM566/MM863: Selected topics in numerical anlysis I
Zimmermann, R. 01/02/2022 → 31/05/2022
Course: Teaching
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MM547: Ordinære differentialligninger: teori, modellering og beregning
Zimmermann, R. 01/09/2019 → 31/12/2019
Course: Teaching
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MM560: Introduktion til programmering
Zimmermann, R. & Jäger, B. 01/02/2019 → 31/05/2019
Course: Teaching