Michael Joswig: Presentations
This contains a selection of presentations given in recent years. Grows slowly.
OSCAR, a tech preview
Presentation given 24 January 2020 at 11th polymake conference and developer meeting, MPI-MIS Leipzig.
The OSCAR code is provided via Jupyter notebooks.
Monomial tropical cones for multicriteria optimization
Presentation given 20 February 2018 at Workshop on Combinatorics, polytopes, and complexity, Institut Mittag-Leffler, Djursholm [pdf].
For more details see this preprint (co-authored with Georg Loho).
Log-barrier interior point methods are not strongly polynomial
Presentation given 20 Oct 2017 at Bridging Continuous and Discrete Optimization, Simons Institute, Berkeley [pdf].
For more details see doi:10.1137/17M1142132 (co-authored with Xavier Allamigeon, Pascal Benchimol, Stéphane Gaubert).
Smooth Fano polytopes and their triangulations
Presentation given 20 April 2017 at 3C in G Workshop on Computational Algebra, King's College, Cambridge [pdf].
For more details see this article (co-authored with Benjamin
Assarf and Andreas Paffenholz) and that preprint (co-authored
with Benjamin Assarf and Julian Pfeifle).
Matroids from hypersimplex splits
Presentation given 24 June 2017 at Baer-Kolloquium, Gent [pdf].
For more details see the paper with the same title, Journal of Combinatorial Theory, Series A (2017), co-authored with Benjamin Schröter.
Tight spans and matroid splits
Presentation given 29 July 2016 at RIMS, Kyoto [pdf].
The polymake XML file format
Presentation given at ICMS 2016 : 5th International Congress of Mathematical Software, ZIB, Berlin, 11-14 July 2016 [pdf].
For more details see the paper with the same title (co-authored with Ewgenij Gawrilow and Simon Hampe).
Presentation given at Hausdorff School: Economics and Tropical Geometry which took place 9-13 May 2016 [pdf].
For polymake demo code see the polymake Miscellanea.
polymake: Software for polytope constructions in linear and integer optimization
Presentation given at CO@Work 2015 which took place 29 Sep 2015 at ZIB, Berlin [pdf]
For more details see the polymake Miscellanea.
Moduli of tropical plane curves
Talk given at MEGA 2015 which took place 15-19 June 2015 in Povo (Trento) [pdf].
For more details see the paper with the same title (co-authored with Sarah Brodsky, Ralph Morrison and Bernd Sturmfels).
Museums, triangles and algebraic curves
Talk given in the Meeting Einstein lecture series, Jüdisches Museum Berlin, 28 May 2015. [pdf]
Lattice polygons and real roots
Talk given at Séminaire CMAP/CMLS/LIX, Ecole Polytechnique, 21 April 2015 [pdf].
For more details see the papers Foldable Triangulations of Lattice Polygons (co-authored with Günter M. Ziegler) and Products of foldable triangulations (co-authored with Niko Witte).
Heuristics for sphere recognition
at Discrete, Computational and Algebraic Topology, Copenhagen, 10-14 Nov 2014 [pdf].
For more details see this paper co-authored with Frank H. Lutz and Mimi Tsuruga.
Which convex hull algorithm should I use?
Tutorial given at the ICMS 2014 in Seoul; [pdf] [code].
For more details see this paper co-authored with members of the polymake team.
polymake for integer linear programming
Talk given at the ISMP 2012 in Berlin [pdf].
Dressians, tropical Grassmannians, and their rays
Talk given at the CIEM, Castro Urdiales, 14 December 2011, at a conference on Tropical Geometry [pdf].
Tropical linear spaces, matroid decompositions, and tropical Grassmannians
Talk given in Frankfurt, 16 July 2010, at the PhD Students Conference on Tropical Geometry 2010 [pdf].