Timm Oertel – Department of Mathematics

Prof. Dr. Timm Oertel

Department of Data Science (DDS)
Chair of Analytics & Mixed-Integer Optimization

Cauerstraße 11
91058 Erlangen

Email: timm.oertel@fau.de
Website: https://www.math.fau.de/wirtschaftsmathematik/team/timm-oertel/

Publications

Aliev I., Averkov G., De Loera JA., Oertel T.:
Sparse representation of vectors in lattices and semigroups
In: Mathematical Programming (2021)
ISSN: 0025-5610
DOI: 10.1007/s10107-021-01657-8
BibTeX: Download

Aliev I., Averkov G., De Loera JA., Oertel T.:
Optimizing Sparsity over Lattices and Semigroups
21st International Conference on Integer Programming and Combinatorial Optimization, IPCO 2020 (London, 08-06-2020 - 10-06-2020)
In: Daniel Bienstock, Giacomo Zambelli (ed.): Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2020
DOI: 10.1007/978-3-030-45771-6_4
BibTeX: Download
Aliev I., Henk M., Oertel T.:
Distances to lattice points in knapsack polyhedra
In: Mathematical Programming 182 (2020), p. 175-198
ISSN: 0025-5610
DOI: 10.1007/s10107-019-01392-1
BibTeX: Download
Oertel T., Paat J., Weismantel R.:
The distributions of functions related to parametric integer optimization
In: SIAM Journal on Applied Algebra and Geometry 4 (2020), p. 422-440
ISSN: 2470-6566
DOI: 10.1137/19M1275954
BibTeX: Download

Oertel T., Paat J., Weismantel R.:
Sparsity of Integer Solutions in the Average Case
20th International Conference on Integer Programming and Combinatorial Optimization, IPCO 2019 (Ann Arbor, MI, 22-05-2019 - 24-05-2019)
In: Andrea Lodi, Viswanath Nagarajan (ed.): Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2019
DOI: 10.1007/978-3-030-17953-3_26
BibTeX: Download

Aliev I., De Loera JA., Eisenbrand F., Oertel T., Weismantel R.:
The support of integer optimal solutions
In: SIAM Journal on Optimization 28 (2018), p. 2152-2157
ISSN: 1052-6234
DOI: 10.1137/17M1162792
BibTeX: Download

Aliev I., De Loera JA., Oertel T., O'Neill C.:
Sparse solutions of linear diophantine equations
In: SIAM Journal on Applied Algebra and Geometry 1 (2017), p. 239-253
ISSN: 2470-6566
DOI: 10.1137/16M1083876
BibTeX: Download
Aliev I., Henk M., Oertel T.:
Integrality gaps of integer knapsack problems
19th International Conference on Integer Programming and Combinatorial Optimization, IPCO 2017 (Waterloo, ON, CAN, 26-06-2017 - 28-06-2017)
In: Friedrich Eisenbrand, Jochen Koenemann (ed.): Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2017
DOI: 10.1007/978-3-319-59250-3_3
BibTeX: Download
Basu A., Oertel T.:
Centerpoints: A link between optimization and convex geometry
In: SIAM Journal on Optimization 27 (2017), p. 866-889
ISSN: 1052-6234
DOI: 10.1137/16M1092908
BibTeX: Download

Artmann S., Eisenbrand F., Glanzer C., Oertel T., Vempala S., Weismantel R.:
A note on non-degenerate integer programs with small sub-determinants
In: Operations Research Letters 44 (2016), p. 635-639
ISSN: 0167-6377
DOI: 10.1016/j.orl.2016.07.004
BibTeX: Download
Baes M., Oertel T., Weismantel R.:
Duality for mixed-integer convex minimization
In: Mathematical Programming 158 (2016), p. 547-564
ISSN: 0025-5610
DOI: 10.1007/s10107-015-0917-y
BibTeX: Download
Basu A., Oertel T.:
Centerpoints: A link between optimization and convex geometry
18th International Conference on Integer Programming and Combinatorial Optimization, IPCO 2016 (Liege, BEL, 01-06-2016 - 03-06-2016)
In: Martin Skutella, Quentin Louveaux (ed.): Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2016
DOI: 10.1007/978-3-319-33461-5_2
BibTeX: Download

Adjiashvili D., Oertel T., Weismantel R.:
A polyhedral frobenius theorem with applications to integer optimization
In: SIAM Journal on Discrete Mathematics 29 (2015), p. 1287-1302
ISSN: 0895-4801
DOI: 10.1137/14M0973694
BibTeX: Download
Hildebrand R., Oertel T., Weismantel R.:
Note on the complexity of the mixed-integer hull of a polyhedron
In: Operations Research Letters 43 (2015), p. 279-282
ISSN: 0167-6377
DOI: 10.1016/j.orl.2015.03.002
BibTeX: Download

Oertel T., Wagner C., Weismantel R.:
Integer convex minimization by mixed integer linear optimization
In: Operations Research Letters 42 (2014), p. 424-428
ISSN: 0167-6377
DOI: 10.1016/j.orl.2014.07.005
BibTeX: Download

Teaching

Vorlesung (VORL)

Convex Geometry and Applications

2 SWS

Für Gasthörer zugelassen

ECTS-Studium

ECTS-Credits: 5

Unterrichtssprache Englisch
- Di 16:00-18:00, Room 04.363 .ics: Termin Di 16:00-18:00 in den Kalender importieren
Advanced Mathematics for Economists

Für Gasthörer zugelassen

Unterrichtssprache Englisch
- Mo 9:45-11:15, Room Zoom-Meeting .ics: Termin Mo 9:45-11:15 in den Kalender importieren

Hauptseminar (HS)

Mathematisches Seminar in elementarer Geometrie (Graphentheorie)

2 SWS

Für Gasthörer zugelassen

ECTS-Studium

ECTS-Credits: 5
- Do 14:00-16:00, Room U1.030 .ics: Termin Do 14:00-16:00 in den Kalender importieren

Übung (UE)

Practical Session to Convex Geometry and Applications

1 SWS

Für Gasthörer zugelassen

Unterrichtssprache Englisch
- Jede zweite Woche Di 8:00-10:00, Room Übung 2 / 01.251-128 (exclude vac) .ics: Termin Jede zweite Woche Di 8:00-10:00 in den Kalender importieren
Advanced Mathematics for Economists

Unterrichtssprache Englisch
- Do 15:00-16:30, Room LG 0.144 (44 Plätze) .ics: Termin Do 15:00-16:30 in den Kalender importieren