University of Göttingen - Institute for Numerical and Applied Mathematics
Jakob Alexander Geppert

Current projects
Fresnel wavelets for coherent diffractive imaging (2011-2019)
DFG project (subproject C11) within the CRC 755 (Nanoscale Photonic Imaging, second and third funding period)
Teaching
Research seminar: Numerical Analysis (English) (WS 2019/2020)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Research seminar: Numerical Analysis (English) (SS 2019)
Monday 14.15 - 15.45, MN 68 (2 SWS)
Research seminar: Numerical Analysis (English) (WS 2018/2019)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Research seminar: Numerical Analysis (English) (SS 2018)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Research seminar: Numerical Analysis (English) (WS 2017/2018)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Research seminar: Numerical Analysis (English) (SS 2017)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Lab: Practical Course in Scientific Computing (SS 2017)
By appointment (4 SWS)
Research seminar: Numerical Analysis (English) (WS 2016/2017)
Thursday 12.30 - 14.00, Seminarraum NAM (2 SWS)
Workshops
International Symposium SFB 755 Nanoscale Photonic Imaging
March 26 - March 29, 2019 in Venice (Italy)
3rd Workshop of the RTG 2088 (Talk)
September 24 - 26, 2018 in Bebra
SFB 755 Spring School 2018
April 5 - 6, 2018 in Kloster Drübeck
SFB 755 Autumn School 2017 (Talk)
October 12, 2017 in Göttingen
2nd Workshop of the RTG 2088 (Talk)
September 25 - 27, 2017 in Eddigehausen
Workshop Geomathematics Meets Medical Imaging (Talk)
September 5 - 8, 2017 in Speyer
Sampling Theory and Applications, 12th International Conference (Talk)
July 3 - 7, 2017 in Tallinn
Winter School 2017 of the CRC 755
February 12 - 16, 2017 in Hirschegg, Kleinwalsertal
Publications
Frame soft shrinkage as proximity operator
Marzieh Hasannasab, Sebastian Neumayer, Gerlind Plonka, Simon Setzer, Gabriele Steidl, Jakob Geppert
University of Göttingen, Institute for Numerical and Applied Mathematics, 2019 (preprint available at arXiv)
Frame soft shrinkage operators are proximity operators
Jakob Geppert, Gerlind Plonka
University of Göttingen, Institute for Numerical and Applied Mathematics, 2019 (preprint as download)
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)
M. Sc. Jakob Geppert

University of Göttingen
Institute for Numerical and Applied Mathematics
Lotzestr. 16-18
37083 Göttingen
Raum 305

Tel.: 0551-39-26772
j.geppert AT math.uni-goettingen.de