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
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