Discrete, Convex and Toric Geometry Group

NEWS

We would like to advertize the conference Lucia Geometrica at Stockholm University, December 9-13, 2019 !

Leiter/Chair

Mitglieder/Members of Research Group

Externe Mitglieder/External Members of Research Group

Ehemalige Mitglieder/Former Members of Research Group

Forschungsschwerpunkte/Research Interests

Konvexe, diskrete und torische Geometrie, mit einem Schwerpunkt auf Gitterpolytopen /
Convex, discrete and toric geometry with a focus on lattice polytopes.

Zum Bild auf der Institutsseite / About the picture on the institute's homepage

The picture shows a polymake rendering of a three-dimensional smooth lattice polytope with a negative Ehrhart coefficient (see this article).

Gäste/Guests

  • Barbara Baumeister (Universität Bielefeld): 15.05.2018
  • Giulia Codenotti (FU Berlin): 09.04.2019
  • Giuliano Gagliardi (Universität Hannover): 06.-09.06.2017, 18.07.2017
  • Christian Haase (FU Berlin): 29.02 - 04.03.2016, 16.-17.01.2017
  • Daniel Hättig (Tübingen): 08.01.2019
  • Jan Hofmann (FU Berlin):  31.05.2016
  • Oscar Iglesias (University of Cantabria): 06.-07.04.2016, 11.09.-15.12.2017
  • Lukas Katthän (Frankfurt/Minnesota): 6.-10.12.2015, 26.-28.4.2017
  • Florian Kohl (FU Berlin): 26.06.2018
  • Frieder Ladisch (Rostock): 16.05.2017
  • Michele Nicolussi (Universität Tübingen): 14.03.2017
  • Andreas Paffenholz (TU Darmstadt): 29.02 - 04.03.2016, 16.-17.01.2017
  • Christoph Pegel (Universität Hannover): 14.11.2018
  • Francisco Santos (University of Cantabria): 06.-07.04.2016
  • Liam Solus (KTH Stockholm): 29.01.-01.02.2019 
  • Viktoria Sorokina (Minsk): 03.-28.07.2017
  • Jonathan Spreer (FU Berlin): 3.7.2018
  • Akiyoshi Tsuchiya (Osaka University): 26.02-01.03.2017

Aktivitäten/Activities

  • December 9-13, 2019; coorganization of the conference Lucia Geometrica at Stockholm University (Nill)
  • August 26-30, 2019; research visit and talk at St. Louis Washington University, St. Louis, USA. (Portakal)
  • August 11-16, 2019; participation at Workshop Mutations: Mirror Symmetry, Deformations, and Combinatorics, at Banff International Research Station, Banff, Canada. (Portakal)
  • July 9-13, 2019; Bern: participation and poster presentation at SIAM Conference on Applied Algebraic Geometry (Borger)
  • June 24-28, 2019; Seoul: invited lecture at Algebraic and Symplectic Aspects in Degenerations of Complex Surfaces (Portakal)
  • June 24-28, 2019; Paris: participation and talk at Summer School on Geometric and Algebraic Combinatorics (Borger)
  • June 17-21, 2019; Madrid: participation and talk at MEGA 2019 (Borger, Portakal)
  • March 20-22, 2019; invited participant to the "Workshop Women in Homotopy Theory and Algebraic Geometry II", FU Berlin, (Portakal)
  • March 11-15. 2019; participation at "Spring School and Workshop on Polytopes", Ruhr University Bochum, Germany (Borger)
  • February 18-20, 2019; talk at "Graduate Student Meeting on Applied Algebra and Combinatorics", MPI for Mathematics in the Sciences, Leipzig, Germany (Borger, Portakal)
  • January 19, 2019; coorganization of Reinhold-Baer-Kolloquium (Nill)
  • December 6, 2018; Freie Universitaet Berlin: talk at research seminar "Algebra/Algebraic Geometry" (Portakal)
  • November 26 - 30, 2018; Politecnico di Torino: participation at Young Perspectives in Deformation Theory (Portakal)
  • October 22, 2018; Stockholm University: PhD defense of Gabriele Balletti (Nill)
  • July 23 - August 10, 2018; Osaka, Japan: talk at Summer School on Lattice Polytopes (Borger, Portakal)
  • June 5-16, 2018; Barranquilla: participation and talk at ECCO 2018 (Borger)
  • March 20-22, 2019; invited participant to the "Workshop Women in Homotopy Theory and Algebraic Geometry II", FU Berlin, (Portakal)
  • March 11-15. 2019; participation at "Spring School and Workshop on Polytopes", Ruhr University Bochum, Germany (Borger)
  • February 18-20, 2019; talk at "Graduate Student Meeting on Applied Algebra and Combinatorics", MPI for Mathematics in the Sciences, Leipzig, Germany (Borger, Portakal)
  • January 19, 2019; coorganization of Reinhold-Baer-Kolloquium (Nill)
  • December 6, 2018; Freie Universitaet Berlin: talk at research seminar "Algebra/Algebraic Geometry" (Portakal)
  • November 26 - 30, 2018; Politecnico di Torino: participation at Young Perspectives in Deformation Theory (Portakal)
  • October 22, 2018; Stockholm University: PhD defense of Gabriele Balletti (Nill)
  • July 23 - August 10, 2018; Osaka, Japan: talk at Summer School on Lattice Polytopes (Borger, Portakal)
  • June 5-16, 2018; Barranquilla: participation and talk at ECCO 2018 (Borger)
  • March 22-24, 2018; Osnabrück: participation and talk at Graduate Student Meeting on Applied Algebra and Combinatorics (Borger)
  • March 5-6, 2018; Paderborn: participation and talk at the GDMV2018 (Borger)
  • February 19-23, 2018; Stockholm: participation in Mittag-Leffler Workshop on Combinatorics, polytopes and complexity (Borger)
  • February 16, 2018; Stockholm: talk at PhD seminar at Stockholm University (Borger)
  • February 12 - March 4, 2018; Stockholm: research visit Gabriele Balletti (Borger)
  • December 18, 2017; Universität zu Köln: talk in the Seminar Interactions between symplectic geometry, combinatorics and number theory (Nill)
  • December 8-9, 2017; Magdeburg: talk at Geometrietag 2017: On the geometry of numbers of lattice polytopes (Nill)
  • October 10, 2017; Magdeburg: talk at Herbstuni 2017 (Nill)
  • September 17-23, 2017; Oberwolfach: coorganization of Mini-Workshop: Lattice Polytopes: Methods, Advances, Applications (Hofscheier, Nill)
  • September 14-16, 2017; Magdeburg: coorganization of Workshop Interactions with Lattice Polytopes (Nill)
  • September 3-9, 2017; Lukecin (Poland): Participation in the 40th Autumn School in Algebraic Geometry: Binomial Ideals (Borger)
  • August 31 - September 5, 2017; Atlanta (USA): Participation in the SIAM Conference on Applied Algebraic Geometry (Hofscheier)
  • July 19, 2017; TU Berlin: talk in the Forschungsseminar Fachgebiet Diskrete Mathematik und Geometrie (Hofscheier)
  • July 3-7, 2017; Dijon (France): Participation in the Summer School Current Topics in the Theory of Algebraic Groups (Hofscheier)
  • June 10, 2017; TU Berlin: Participation in the workshop Polynomials and Polytopes (Borger, Hofscheier)
  • June 2, 2017; Erlangen: talk in the Emmy-Noether-Seminar (Hofscheier)
  • June 1-2, 2017; Breukelen: speaker at Mathematics Cluster DIAMANT Symposium Spring 2017 (Nill)
  • April 26, 2017; Magdeburg: third meeting of Joint FU Berlin - Köln - Magdeburg Seminar on Lattice Polytopes and Symplectic geometry (Hofscheier, Nill)
  • March 8-11, 2017; Stockholm: research visit with Gabriele Balletti at Stockholm University (Nill)
  • March 3, 2017; Leicester: talk at East Midlands Seminar in Geometry (Nill)
  • February 28 - March 7; Nottingham: research visit Alexander Kaspryzk (Nill)
  • February 21-22, 2017; Köln: research visit Silvia Sabatini (Hofscheier)
  • February 21, 2017; Köln: second meeting of  Joint FU Berlin - Köln - Magdeburg Seminar on Lattice Polytopes and Symplectic geometry (Hofscheier, Nill)
  • February 3-9, 2017; Riezlern, Austra: speaker at Workshop on Perspectives and Emerging Topics in Algebra and Konvexity (Nill)
  • February 1-3, 2017; Hannover research visit Giuliano Gagliardi and talk in the Oberseminar Zahlentheorie und Arithmetische Geometrie (Hofscheier)
  • January 20, 2017; FU Berlin: first meeting of Joint FU Berlin - Köln - Magdeburg Seminar on Lattice Polytopes and Symplectic geometry (Hofscheier, Nill)
  • January 12-14, 2017; Bielefeld: speaker at Workshop on Permutation Groups: Methods and Applications (Nill)
  • December 12-15, 2016; FU Berlin: coorganization (Nill) and speaker (Hofscheier) at Einstein Workshop on Lattice Polytopes
  • November 7 - 11, 2016; Yau Mathematical Sciences Center (China): participation at International Conference on Spherical Varieties (Hofscheier)
  • November 10, 2016; Magdeburg: coorganization of MPI Leipzig Seminar Non-Linear Algebra at OvGU Magdeburg (Hofscheier, Nill)
  • October 31 - November 4, 2016; Yau Mathematical Sciences Center (China): participation at Workshop on Spherical Varieties (Hofscheier)
  • August - October, 2016: Fields Institute (Toronto): long-time participant at Combinatorial Algebraic Geometry (Major thematic program at the Fields Institute) (Nill)
  • August 1 - 5, 2016; RIMS at Kyoto University: speaker at workshop Computational Commutative Algebra and Convex Polytopes (Hofscheier, Nill)
  • July 19-24, 2016; 7ECM Berlin: coorganization of Mini-Symposium "Combinatorics of polynomial systems" and speaker at Mini-Symposium "Toric, tropical and combinatorial geometry - a panorama" (Nill)
  • June 13 - 17, 2016; Nesin Mathematics Village (Turkey): participation at workshop GAeL XXIV (Hofscheier)
  • June 9, 2016; Magdeburg: talk "How to count like an Egyptian: pizzas, Platonic solids and the multiverse" at 5th Nerd Nite Magdeburg (Nill)
  • May 25, 2016; Magdeburg: Inaugural lecture Lattice Polytopes - My Mathematical Universe (Nill)
  • May 21, 2016; Magdeburg: talk at Lange Nacht der Wissenschaft (Nill)
  • May 21, 2016; Magdeburg: coorganization of Reinhold-Baer-Kolloquium (invitation) (Nill)
  • April 27, 2016; University Osnabrück: colloquium talk What's up in Ehrhart Theory of Lattice Polytopes? (Nill)
  • March 27 - April 2, 2016; Oberwolfach Research Institute for Mathematics: participation at workshop Toric Geometry (Hofscheier, Nill)
  • December 14, 2015; FU Berlin: talk at Research Training Group "Methods for Discrete Structures": Ehrhart theory - quo vadis? (Nill)