Termine des ALTA-Oberseminar de http://www.alta.uni-bremen.de/oberseminar Thu, 21 Nov 2024 10:10:44 Christopher de Vries (Universität Bremen / Hokkaido University, Japan): Ehrhart quasi-polynomials of almost integral polytopes http://www.alta.uni-bremen.de/oberseminar/ Thu, 07 Oct 2021 10:00:00 +0200 Fritz Grimpen (Universität Bremen): The classification problem of operations on convex bodies http://www.alta.uni-bremen.de/oberseminar/ Mon, 12 Jul 2021 14:15:00 +0200 Nico Lombardi (TU Wien): Valuations on Convex Bodies http://www.alta.uni-bremen.de/oberseminar/ Wed, 07 Jul 2021 12:15:00 +0200 Jesús Yepes Nicolás (University of Murcia): On refinements of the Brunn-Minkowski inequality http://www.alta.uni-bremen.de/oberseminar/ Wed, 23 Jun 2021 12:15:00 +0200 Francisco Marín Sola (University of Murcia): On Grünbaum type inequalities http://www.alta.uni-bremen.de/oberseminar/ Wed, 09 Jun 2021 12:15:00 +0200 Safwan Alrahmoun (Universität Bremen): Einführung in die Geometrie der Zahlen, der Satz von Minkowski und der Satz von Blichfeldt http://www.alta.uni-bremen.de/oberseminar/ Fri, 15 Jan 2021 13:00:00 +0100 Eduardo Lucas Marín (University of Murcia): Brunn-Minkowski and isoperimetric type inequalities for the lattice point enumerator http://www.alta.uni-bremen.de/oberseminar/ Wed, 16 Dec 2020 10:00:00 +0100 Gideon Klaila (Universität Bremen): Discrete Morse Theory in Topological Data Analysis http://www.alta.uni-bremen.de/oberseminar/ Wed, 02 Dec 2020 12:15:00 +0100 Kai Renken (Universität Bremen): Cosystoles and Cheeger Constants of the Simplex http://www.alta.uni-bremen.de/oberseminar/ Wed, 04 Nov 2020 10:00:00 +0100 Andreas Bernig (Goethe Universität Frankfurt am Main): Algebraic integral geometry (CANCELLED) http://www.alta.uni-bremen.de/oberseminar/ Thu, 12 Mar 2020 10:00:00 +0100 Carl Hammann (Universität Bremen): Introduction to (higher) inductive types http://www.alta.uni-bremen.de/oberseminar/ Tue, 10 Mar 2020 11:00:00 +0100 Nico Lombardi (Università degli Studi di Firenze, Italy): The theory of valuations on the space of quasi-concave functions http://www.alta.uni-bremen.de/oberseminar/ Thu, 05 Mar 2020 10:00:00 +0100 Nico Lombardi (Università degli Studi di Firenze, Italy): Introduction to valuation on function spaces http://www.alta.uni-bremen.de/oberseminar/ Thu, 27 Feb 2020 10:00:00 +0100 Nico Lombardi (Università degli Studi di Firenze, Italy): Valuation theory on convex bodies http://www.alta.uni-bremen.de/oberseminar/ Thu, 20 Feb 2020 10:00:00 +0100 Nico Lombardi (Università degli Studi di Firenze, Italy): Theory of convex bodies http://www.alta.uni-bremen.de/oberseminar/ Thu, 13 Feb 2020 10:00:00 +0100 Arkadi Schelling (Universität Bremen): Approximative Persistent Homology with Discrete Morse Theory http://www.alta.uni-bremen.de/oberseminar/ Thu, 21 Feb 2019 08:30:00 +0100 Jesús Yepes Nicolás (Universidad de Murcia, Spain): On Rogers-Shephard type inequalities for general measures http://www.alta.uni-bremen.de/oberseminar/ Thu, 06 Dec 2018 10:00:00 +0100 Tim Lindemann (Universität Bremen): Framework decompositions http://www.alta.uni-bremen.de/oberseminar/ Tue, 29 May 2018 09:00:00 +0200 Tim Lindemann (Universität Bremen): An introduction to combinatorial rigidity http://www.alta.uni-bremen.de/oberseminar/ Thu, 24 May 2018 10:00:00 +0200 Aaron Lye (Universität Bremen): Fusion Grammars http://www.alta.uni-bremen.de/oberseminar/ Mon, 26 Feb 2018 12:30:00 +0100 Masahiko Yoshinaga (Universität Bremen): G-Tutte polynomials and abelian Lie group arrangement http://www.alta.uni-bremen.de/oberseminar/ Wed, 19 Jul 2017 10:15:00 +0200 Norihiro Nakashima (Tokyo Denki University): Answers to some questions for high order freeness of hyperplane arrangements http://www.alta.uni-bremen.de/oberseminar/ Mon, 12 Jun 2017 13:00:00 +0200 Alexandru Dimca (Université Nice Sophia Antipolis): Computation of the Alexander Polynomial of Projective Plane Curves http://www.alta.uni-bremen.de/oberseminar/ Wed, 29 Mar 2017 10:30:00 +0200 Xin Fang (Universität Köln): Toric Degenerations of Flag Varieties via Newton-Okounkov Bodies http://www.alta.uni-bremen.de/oberseminar/ Thu, 16 Mar 2017 10:15:00 +0100 Ghislain Fourier (Universität Hannover): Linear Degenerate Flag Varieties http://www.alta.uni-bremen.de/oberseminar/ Wed, 15 Mar 2017 12:30:00 +0100 Christoph Pegel (Universität Bremen): The Universal Family of Marked Poset Polytopes http://www.alta.uni-bremen.de/oberseminar/ Thu, 09 Feb 2017 13:00:00 +0100 Masahiko Yoshinaga (Universität Bremen): Problems around hyperplane arrangements (Part 2) http://www.alta.uni-bremen.de/oberseminar/ Thu, 05 Jan 2017 10:15:00 +0100 Paul Helminck (Universität Bremen): Abelian Tropical Geometry II http://www.alta.uni-bremen.de/oberseminar/ Thu, 22 Dec 2016 12:30:00 +0100 Masahiko Yoshinaga (Universität Bremen): Problems around hyperplane arrangements (Part 1) http://www.alta.uni-bremen.de/oberseminar/ Thu, 22 Dec 2016 10:15:00 +0100 Christopher de Vries (Universität Bremen): Das Ehrhartpolynom von Gitterpolytopen http://www.alta.uni-bremen.de/oberseminar/ Tue, 13 Dec 2016 09:00:00 +0100 Takuro Abe (Kyushu University, Japan): Hyperplane arrangements and Hessenberg varieties http://www.alta.uni-bremen.de/oberseminar/ Thu, 08 Dec 2016 12:30:00 +0100 Paul Helminck (Universität Bremen): Abelian Tropical Geometry http://www.alta.uni-bremen.de/oberseminar/ Tue, 22 Nov 2016 10:30:00 +0100 Madeline Brandt (UC Berkeley/ MPI Leipzig): The Degree of SO(n) http://www.alta.uni-bremen.de/oberseminar/ Tue, 22 Nov 2016 09:00:00 +0100 Christoph Pegel (Universität Bremen): Marked Order Polyhedra III: Facets, Minkowski Sums and a Subdivision http://www.alta.uni-bremen.de/oberseminar/ Thu, 13 Oct 2016 10:00:00 +0200 Christoph Pegel (Universität Bremen): Marked Order Polyhedra II: Face Structure and Geometry of Marked Order Polyhedra http://www.alta.uni-bremen.de/oberseminar/ Fri, 23 Sep 2016 13:00:00 +0200 Christoph Pegel (Universität Bremen): Marked Order Polyhedra I: Polytopes in Order Theory, Representation Theory and Finite Frame Theory http://www.alta.uni-bremen.de/oberseminar/ Fri, 23 Sep 2016 10:30:00 +0200 Kai Renken (Universität Bremen): Higher Topological Complexity http://www.alta.uni-bremen.de/oberseminar/ Thu, 22 Sep 2016 10:00:00 +0200 Alexander Nover (Universität Bremen): Broken Circuit Complexes and Hyperplane Arrangements http://www.alta.uni-bremen.de/oberseminar/ Tue, 30 Aug 2016 14:00:00 +0200 Andreas Weber (Universität Bonn): Model reduction of biological and chemical networks using methods from tropical geometry http://www.alta.uni-bremen.de/oberseminar/ Tue, 30 Aug 2016 10:15:00 +0200 Erik Hanke (Universität Bremen): Freeness of (Multi-)Arrangements and Characteristic Polynomials (Part 2) http://www.alta.uni-bremen.de/oberseminar/ Thu, 18 Aug 2016 10:15:00 +0200 Erik Hanke (Universität Bremen): Freeness of (Multi-)Arrangements and Characteristic Polynomials http://www.alta.uni-bremen.de/oberseminar/ Thu, 04 Aug 2016 10:15:00 +0200 Lena Ranke (Universität Bremen): Der Satz von Eagon-Reiner http://www.alta.uni-bremen.de/oberseminar/ Mon, 01 Aug 2016 10:15:00 +0200 Luisa Peter (Universität Bremen): Serre's property FA http://www.alta.uni-bremen.de/oberseminar/ Thu, 07 Jul 2016 10:15:00 +0200 Francesca Acquistapace, Fabrizio Broglia (University of Pisa): A nullstellensatz for rings of global real analytic functions http://www.alta.uni-bremen.de/oberseminar/ Thu, 30 Jun 2016 10:15:00 +0200 Tim Lindemann (Universität Bremen): The real Grassmanian as a CW Complex http://www.alta.uni-bremen.de/oberseminar/ Mon, 27 Jun 2016 10:15:00 +0200 Bino Nolting (Universität Bremen): Das Wortproblem in Baumslag-Solitar-Gruppen http://www.alta.uni-bremen.de/oberseminar/ Mon, 20 Jun 2016 10:15:00 +0200 Jana Larisch (Universität Bremen): Die Bruhat-Ordnung http://www.alta.uni-bremen.de/oberseminar/ Mon, 13 Jun 2016 10:15:00 +0200 Elia Saini (Université de Fribourg): Non realizability of uniform phased matroids http://www.alta.uni-bremen.de/oberseminar/ Mon, 04 Apr 2016 10:15:00 +0200 Thibault Rieutord (Paris): Modeling Adversaries as Iterated Tasks http://www.alta.uni-bremen.de/oberseminar/ Thu, 31 Mar 2016 13:00:00 +0200 Kai Renken (Universität Bremen): An introduction to topological complexity http://www.alta.uni-bremen.de/oberseminar/ Thu, 31 Mar 2016 10:15:00 +0200 Paul Helminck (Rijksuniversiteit Groningen): On tropical Igusa invariants http://www.alta.uni-bremen.de/oberseminar/ Wed, 10 Feb 2016 12:30:00 +0100 Erdal Acar (Universität Bremen): Gröbnerfächer http://www.alta.uni-bremen.de/oberseminar/ Thu, 04 Feb 2016 12:30:00 +0100 Tim Lindemann (Universität Bremen): Sample Theory: Lineare Algebra als Lückenfüller http://www.alta.uni-bremen.de/oberseminar/ Thu, 21 Jan 2016 12:30:00 +0100 Pauline Bailet (Universität Bremen): Milnor fibers and monodromy http://www.alta.uni-bremen.de/oberseminar/ Thu, 14 Jan 2016 12:30:00 +0100 Pauline Bailet (Universität Bremen): Introduction to hyperplane arrangements http://www.alta.uni-bremen.de/oberseminar/ Wed, 13 Jan 2016 12:30:00 +0100 Xiaoxian Tang (Universität Bremen): A probabilistic algorithm for computing data-discriminant of likelihood equations http://www.alta.uni-bremen.de/oberseminar/ Thu, 17 Dec 2015 12:15:00 +0100 Isabella Bierenbaum (HU Berlin): Landau Singularities of Feynman Diagrams http://www.alta.uni-bremen.de/oberseminar/ Wed, 30 Sep 2015 14:45:00 +0200 Marko Berghoff (HU Berlin): Wonderful compactifications in Quantum Field Theory http://www.alta.uni-bremen.de/oberseminar/ Wed, 30 Sep 2015 13:30:00 +0200 Kai Renken (Universität Bremen): Linkages and polygon spaces http://www.alta.uni-bremen.de/oberseminar/ Thu, 17 Sep 2015 12:15:00 +0200 Eleonora Galassi (Università di Pisa): Nestohedra associated with root systems http://www.alta.uni-bremen.de/oberseminar/ Wed, 09 Sep 2015 10:15:00 +0200 Paweł Pilarczyk (IST Austria): A computational method for topological classification of global dynamics http://www.alta.uni-bremen.de/oberseminar/ Thu, 13 Aug 2015 13:00:00 +0200 Roy Meshulam (Technion, Haifa, Israel): Expander graphs http://www.alta.uni-bremen.de/oberseminar/ Tue, 04 Aug 2015 14:00:00 +0200 Marcus Ermler (Universität Bremen): SAT-based verification of graph transformation units http://www.alta.uni-bremen.de/oberseminar/ Thu, 02 Jul 2015 10:15:00 +0200 Damien Imbs (Universität Bremen): Distributed computing II: models and calculability http://www.alta.uni-bremen.de/oberseminar/ Thu, 26 Mar 2015 10:30:00 +0100 Masahiko Yoshinaga (Hokkaido): Milnor fibers of real line arrangements http://www.alta.uni-bremen.de/oberseminar/ Wed, 25 Mar 2015 10:30:00 +0100 Matthias Franz: Big polygon spaces http://www.alta.uni-bremen.de/oberseminar/ Thu, 08 Jan 2015 12:10:00 +0100 Damien Imbs (Universität Bremen): What is... Distributed Computing? http://www.alta.uni-bremen.de/oberseminar/ Thu, 18 Dec 2014 12:10:00 +0100 Kirsten Schmitz (Universität Bremen): What is... Tropical Geometry? (Part 2) http://www.alta.uni-bremen.de/oberseminar/ Thu, 11 Dec 2014 12:20:00 +0100 Kirsten Schmitz (Universität Bremen): What is... Tropical Geometry? http://www.alta.uni-bremen.de/oberseminar/ Thu, 04 Dec 2014 12:10:00 +0100 Viktoriya Ozornova (Universität Bremen): What is... A Spectral Sequence? http://www.alta.uni-bremen.de/oberseminar/ Thu, 20 Nov 2014 12:10:00 +0100 Martin Burger (Universität Bremen): What is... Matroid Theory? (extended) http://www.alta.uni-bremen.de/oberseminar/ Thu, 13 Nov 2014 12:00:00 +0100 Christoph Pegel (Universität Bremen): What is... Matroid Theory? http://www.alta.uni-bremen.de/oberseminar/ Thu, 30 Oct 2014 12:00:00 +0100 Viktoriya Ozornova (Universität Bremen): Homotopy Theory of Categories http://www.alta.uni-bremen.de/oberseminar/ Wed, 08 Oct 2014 10:15:00 +0200 Sonja Riedel (Universität Bremen): Combinatorial Invariants of Toric Arrangements http://www.alta.uni-bremen.de/oberseminar/ Tue, 29 Jul 2014 10:20:00 +0200 Elia Saini (Universität Bremen): Phasing classes of matroids http://www.alta.uni-bremen.de/oberseminar/ Tue, 29 Jul 2014 09:00:00 +0200 Ralf Donau: An Equivariant Patchwork Theorem http://www.alta.uni-bremen.de/oberseminar/ Thu, 24 Jul 2014 10:30:00 +0200 ALTA Bachelor Students: ALTA Bachelor Seminar http://www.alta.uni-bremen.de/oberseminar/ Wed, 23 Jul 2014 09:30:00 +0200 Lennart Meier (University of Virginia, USA): Stable Homotopy Theory: An Introduction http://www.alta.uni-bremen.de/oberseminar/ Thu, 26 Jun 2014 10:15:00 +0200 Demet Taylan (Universität Bremen): Matching trees on simplicial complexes and some splitting results http://www.alta.uni-bremen.de/oberseminar/ Thu, 19 Jun 2014 10:15:00 +0200 Roman Bruckner (Universität Bremen): A cofibrantly generated model structure on the category of small acyclic categories http://www.alta.uni-bremen.de/oberseminar/ Thu, 05 Jun 2014 11:00:00 +0200 Jan-Philipp Litza: Combinatorial stratifications of complex arrangements http://www.alta.uni-bremen.de/oberseminar/ Tue, 15 Apr 2014 13:00:00 +0200 Dmitry Feichtner-Kozlov (Universität Bremen): Weak symmetry breaking and abstract simplicial paths http://www.alta.uni-bremen.de/oberseminar/ Mon, 14 Apr 2014 10:15:00 +0200 Tim Haga (Universität Bremen): Cluster algebras, part II http://www.alta.uni-bremen.de/oberseminar/ Mon, 07 Apr 2014 10:15:00 +0200 Christoph Pegel: A crash course on toric varieties, II http://www.alta.uni-bremen.de/oberseminar/ Wed, 02 Apr 2014 13:00:00 +0200 Tim Haga (Universität Bremen): Cluster algebras http://www.alta.uni-bremen.de/oberseminar/ Mon, 31 Mar 2014 10:15:00 +0200 Lasse Paetz: Cohomology of arrangements http://www.alta.uni-bremen.de/oberseminar/ Tue, 25 Mar 2014 10:15:00 +0100 Simona Settepanella (Hokkaido University, Japan/ Scuola Superiore Sant'Anna, Italy): Zonotopes and production theory http://www.alta.uni-bremen.de/oberseminar/ Thu, 13 Feb 2014 10:00:00 +0100 Emily King (Universität Bremen): (Hilbert Space) Frames meet Algebraic Geometry http://www.alta.uni-bremen.de/oberseminar/ Wed, 05 Feb 2014 10:15:00 +0100 George Raptis (Universität Osnabrueck): Homotopy theory of posets http://www.alta.uni-bremen.de/oberseminar/ Tue, 04 Feb 2014 14:15:00 +0100 Christoph Pegel: A crash course on toric varieties, I http://www.alta.uni-bremen.de/oberseminar/ Wed, 08 Jan 2014 10:15:00 +0100 Elia Saini (SISSA Trieste): Approximate Hermitian-Yang-Mills structures on semistable Higgs bundles http://www.alta.uni-bremen.de/oberseminar/ Tue, 19 Nov 2013 10:30:00 +0100 Karim Adiprasito (IHÉS, Bures-sur-Yvette): Combinatorics of Buchsbaum modules and applications to Upper bound theorems and isoperimetry. http://www.alta.uni-bremen.de/oberseminar/ Wed, 13 Nov 2013 11:00:00 +0100 Angelina Degner, Wienke Menges: Farkas'Lemma,Das Spiel ``Shapley'' http://www.alta.uni-bremen.de/oberseminar/ Wed, 03 Jul 2013 10:45:00 +0200 Jean-Marie Droz: Topology of random 2-dimensional complexes http://www.alta.uni-bremen.de/oberseminar/ Thu, 28 Feb 2013 10:00:00 +0100 Christian Bey: continuation: an inequality with applications to thresholds and percolation http://www.alta.uni-bremen.de/oberseminar/ Thu, 21 Feb 2013 10:00:00 +0100 Sonja Riedel: Zero-one laws for graph properties (Part II) http://www.alta.uni-bremen.de/oberseminar/ Thu, 14 Feb 2013 10:00:00 +0100 Christian Bey: continuation: An inequality with application to thresholds and precolation http://www.alta.uni-bremen.de/oberseminar/ Thu, 31 Jan 2013 10:00:00 +0100 Sonja Riedel: Zero-one laws for graph properties http://www.alta.uni-bremen.de/oberseminar/ Thu, 24 Jan 2013 10:00:00 +0100 Christian Bey: An inequality involving degrees of hypergraphs, with applications to expansion, thresholds and percolation (Part II) http://www.alta.uni-bremen.de/oberseminar/ Thu, 17 Jan 2013 10:00:00 +0100 Lasse Paetz: The classification of covering spaces http://www.alta.uni-bremen.de/oberseminar/ Tue, 15 Jan 2013 10:15:00 +0100 Christian Bey: An inequality involving degrees of hypergraphs, with applications to expansion, thresholds and percolation http://www.alta.uni-bremen.de/oberseminar/ Thu, 10 Jan 2013 10:00:00 +0100 Martin Dlugosch: Introduction to random graphs, Part 3 http://www.alta.uni-bremen.de/oberseminar/ Thu, 20 Dec 2012 10:00:00 +0100 Michał Adamaszek: Introduction to random graphs, thresholds for connectivity http://www.alta.uni-bremen.de/oberseminar/ Thu, 13 Dec 2012 10:00:00 +0100 Jean-Marie Droz: Introduction to random graphs, part I. http://www.alta.uni-bremen.de/oberseminar/ Thu, 06 Dec 2012 10:00:00 +0100 Anna Gundert (ETHZ): Expansion properties for simplicial complexes. http://www.alta.uni-bremen.de/oberseminar/ Tue, 04 Dec 2012 10:00:00 +0100 Martin Dlugosch (Universität Bremen): Decomposition complexes http://www.alta.uni-bremen.de/oberseminar/ Wed, 28 Nov 2012 10:30:00 +0100 Jan-Philipp Litza: Extended persistence. http://www.alta.uni-bremen.de/oberseminar/ Wed, 01 Aug 2012 11:00:00 +0200 Matthias Franz, U Western Ontario: Äquivariante Kohomologie und Syzygien. http://www.alta.uni-bremen.de/oberseminar/ Wed, 25 Jul 2012 11:00:00 +0200 Julia Heller: Brylawski's conjecture and the arithmetic Tutte polynomial. http://www.alta.uni-bremen.de/oberseminar/ Wed, 18 Jul 2012 11:00:00 +0200 Daniel Müllner, Stanford U.: Consistent scale selection for exploratory visualization and analysis of data sets. http://www.alta.uni-bremen.de/oberseminar/ Wed, 11 Jul 2012 13:00:00 +0200 Gerrit Grenzebach.: Chain complexes. http://www.alta.uni-bremen.de/oberseminar/ Thu, 28 Jun 2012 09:00:00 +0200 Johannes Carmesin, Uni Hamburg.: Infinite graphs and matroids. http://www.alta.uni-bremen.de/oberseminar/ Wed, 20 Jun 2012 11:00:00 +0200 Jean-Marie Droz, Emanuele Delucchi.: Open Problems. http://www.alta.uni-bremen.de/oberseminar/ Wed, 13 Jun 2012 11:00:00 +0200 Dr. Silke Horn, TU Darmstadt.: Topological Representation of Tropical Oriented Matroids. http://www.alta.uni-bremen.de/oberseminar/ Wed, 06 Jun 2012 11:00:00 +0200 Prof. Dr. Michael Falk, Northern Arizona University: Critical points of master functions. http://www.alta.uni-bremen.de/oberseminar/ Tue, 22 May 2012 16:15:00 +0200 Dr. Luca Moci, Università di Roma 1 ``La Sapienza'': Partition functions, toric arrangements, and arithmetic matroids. http://www.alta.uni-bremen.de/oberseminar/ Tue, 08 May 2012 16:15:00 +0200 Prof. Dr. Yuri Manin, Direktor MPI Mathematik, Bonn: F1: a mathematical object in search of a definition. http://www.alta.uni-bremen.de/oberseminar/ Tue, 08 May 2012 12:15:00 +0200 Prof. Dr. Yuri Manin, Direktor des MPI Mathematik, Bonn: Mathematics as a Toolkit: From Models to Data Mining. http://www.alta.uni-bremen.de/oberseminar/ Mon, 07 May 2012 19:30:00 +0200 Lasse Paetz, Uni Bremen: Arithmetische Matroide: Grundlagen und Dualität. http://www.alta.uni-bremen.de/oberseminar/ Wed, 18 Apr 2012 11:00:00 +0200 Bart Frenk, TU Eindhoven: Constructing a tropical linear monoid (part 2). http://www.alta.uni-bremen.de/oberseminar/ Wed, 28 Mar 2012 11:00:00 +0200