University of Göttingen - Institute for Numerical and Applied Mathematics
Felix Krahmer

Own homepage

Teaching
Research seminar: Numerical Analysis (English) (SS 2015)
Monday, 12.30 - 14.00, Seminarraum NAM (2 SWS)
Research seminar: Numerical Analysis (English) (WS 2014/2015)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Research seminar: Numerical Analysis (English) (SS 2014)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Lecture: Einführung in die Optimierung (German) (SS 2014)
Tuesday and Friday 8:15 - 8:55, Seminarraum 2 (NAM) (Lecture: 4 SWS + Exercises: 2 SWS / 9 ECTS)
Research seminar: Numerical Analysis (English) (WS 2013/2014)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Lecture: Mathematical signal processing for biophysical applications (English) (WS 2013/2014)
Monday and Thursday 10:15 - 11:55, Seminarraum NAM (Lecture: 4 SWS + Exercises: 2 SWS / 9 ECTS)
Lecture: Funktionalanalysis (German) (SS 2013)
Monday and Thursday 12.15 - 13.55, MN 67 (Lecture: 4 SWS + Exercises: 2 SWS / 9 ECTS)
Research seminar: Numerical Analysis (English) (SS 2013)
Wednesday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Lecture: Compressed Sensing (English) (WS 2012/2013)
Wednesday 16.15-17.45, MN 68 (2 SWS / 6 ECTS)
Seminar: Algorithmen zur dünnbesetzten Approximation (German and English) (WS 2012/2013)
Block seminar in October 2012, Seminarraum NAM (2 SWS)
Research seminar: Numerical Analysis (English) (WS 2012/2013)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Lecture: Random Matrix Theory (English) (SS 2012)
Monday 10.15 - 12.00 (2 SWS)
Seminar: Frame Theory (English) (SS 2012)
Tuesday 10.15 - 11.45 (2 SWS)
Research seminar: Numerical Analysis (English) (SS 2012)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Publications
Sparse Power Factorization: Balancing peakiness and sample complexity
Dominik Stöger, Jakob Geppert, Felix Krahmer
Advances in Computational Mathematics 45(3), 1711--1728, 2019 (preprint available at arXiv)
Sparse Power Factorization With Refined Peakiness Conditions
Dominik Stöger, Jakob Geppert, Felix Krahmer
2018 IEEE Statistical Signal Processing Workshop (SSP), 2018 (See at IEEE Xplore)
Refined performance guarantees for Sparse Power Factorization
Jakob Geppert, Felix Krahmer, Dominik Stöger
2017 International Conference on Sampling Theory and Applications (SampTA), 2017 (See at IEEE Xplore)
Fast Subspace Approximation via Greedy Least-Squares
M. Iwen, Felix Krahmer
Constructive Approximation 42(2), 281-301, 2015 (preprint as download)
A Partial Derandomization of PhaseLift using Spherical Designs
D. Gross, Felix Krahmer, R. Küng
J. Fourier Anal. Appl. 21(2), 229-266, 2015 (preprint as download)
An RIP approach to Sigma-Delta quantization for compressed sensing
Joe-Mei Feng, Felix Krahmer
IEEE Signal Process. Lett. 21(11), 1351-1355, 2014 (preprint as download)
Sparse Matrices in Frame Theory
Felix Krahmer, G. Kutyniok, J. Lemvig
Computational Statistics 29, 547-568, 2014 (preprint as download)
Suprema of Chaos Processes and the Restricted Isometry Property
Felix Krahmer, S. Mendelson, H. Rauhut
Comm. Pure Appl. Math. 67(11), 1877-1904, 2014 (preprint as download)
Sigma-Delta quantization of sub-Gaussian frame expansions and its application to compressed sensing
Felix Krahmer, R. Saab, Ö. Yilmaz
Inform. Inference 3(1), 40-58, 2014 (preprint as download)
Local sampling and approximation of operators with bandlimited Kohn-Nirenberg symbols
Felix Krahmer, G. Pfander
Constr. Approx. 39(3), 541-572, 2014 (preprint as download)
Stable and robust sampling strategies for compressive imaging
Felix Krahmer, R. Ward
IEEE Trans. Image Proc. 23(2): 612-622, 2014 (preprint as download)
Sparsity and spectral properties of dual frames
Felix Krahmer, G. Kutyniok, J. Lemvig
Linear Algebra and its Applications 439(4), 2013 (982-998, preprint as download)
Lower bounds for the error decay incurred by coarse quantization schemes
Felix Krahmer, Rachel Ward
Appl. Comput. Harmonic Anal. 32(1), 2012 (131-138, preprint as download)
Root-exponential accuracy for coarse quantization of finite frame expansions
Felix Krahmer, R. Saab, Rachel Ward
IEEE J. Inf. Theo. 58(2), 2012 (1069-1079, preprint as download)
SqFreeEVAL: An (almost) optimal real-root isolation algorithm
M. Burr, Felix Krahmer
Journal of Symbolic Computation 47(2), 2012 (153-166, preprint as download)
An Optimal Family of Exponentially Accurate One-Bit Sigma-Delta Quantization Schemes
Percy Deift, C. Sinan Güntürk, Felix Krahmer
Comm. Pure Appl. Math. 64(7), 2011 (883-919, preprint as download)
New and improved Johnson-Lindenstrauss embeddings via the Restricted Isometry Property
Felix Krahmer, Rachel Ward
SIAM J. Math. Anal. 43(3), 2011 (1269-1281, preprint as download)
Optimally sparse frames
Peter Casazza, P. Heinecke, Felix Krahmer, Gitta Kutyniok
IEEE J. Inf. Theo. 57(11), 2011 (7279-7287, preprint as download)
Novel Schemes for Sigma-Delta Modulation: Improved Exponential Accuracy to Low-Complexity Design
Felix Krahmer
New York University, 2009 (PhD thesis)
Uncertainty in time-frequency representations on finite abelian groups and applications
Felix Krahmer, Götz E. Pfander, Peter Rashkov
Appl. Comput. Harmon. Anal. 25(2), 2008 (209-225, preprint as download)



Prof. Dr. Felix Krahmer