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Dates from the work groups

Workshop at CECAM node Berlin

Location: Freie Universität Berlin

Aug 30, 2021 - Sep 01, 2021

Johannes Rau (Bogotá): Tropical geometry and some applications

In my talk, I would like to introduce the main ideas of tropical geometry (from a geometric point of view) and then focus on some of the main applicactions, in particular, in the context of real algebraic geometry. In this context, tropical geometry can be understodd as a generalization of Viro's patchworking technique to construct real algebraic varieties with specific topological properties. Tropical methods can be used here to extend the technique to singular varieties and higher codimensions.

Dec 15, 2020 | 04:00 PM

Disputation Hannah Sjöberg

Thema der Dissertation: On Face Vector Sets and on Alcoved Polytopes Thema der Disputation: Geometry of Support Vector Machines

Location: WebEx Please ask a group member how to join.

Sep 23, 2020 | 05:00 PM

Disputation Anna Maria Hartkopf

Thema der Dissertation: Mathematical Science Communication a Study and a Case Study Thema der Disputation: Pentagonal Tilings of the Plane

Location: WebEx Please ask a group member how to join.

Sep 23, 2020 | 11:00 AM
Jul 16, 2020 | 04:15 PM

Trends in control theory at the interface of Systems & Synthetic Biology

Location: 2020 IFAC World Congress in Berlin, Estrel hotel and congress center

Jul 12, 2020 - Jul 17, 2020

ISMB 2020

Location: Montréal, Canada

Jul 12, 2020 - Jul 16, 2020

Victor Martinez-Luaces: Visualizing roots of complex functions using sibling curves

Location: The talk will be held via WebEx. If you are interested in joining the meeting, please contact: beate.pierchalla@fu-berlin.de

Jun 30, 2020 | 02:00 PM

Serkan Emek: Iterated Robin problem for the higher order Poisson equation

Location: Die Veranstaltung wird via WebEx durchgeführt. Die Zugangsdaten werden noch bekannt gegeben.

Jun 23, 2020 | 04:00 PM

Habilitation Jean-Philippe Labbé

Location: WebEx Please ask a member of the work group for further information (e.g. Jonathan Kliem).

Jun 12, 2020 | 10:00 AM
Mar 09, 2020 - Mar 11, 2020
Feb 11, 2020 | 04:15 PM
Feb 04, 2020 - Feb 07, 2020

Disputation Giulia Codenotti

Thema der Dissertation: Covering properties of lattice polytopes Thema der Disputation: Triangulations of products of simplices and the spread out simplices conjecture

Location: Arnimallee 3, SR 019

Jan 17, 2020 | 12:00 PM

Workshop "Mathematics for the Human Past"

Location: Zuse Institute Berlin

Dec 09, 2019 - Dec 10, 2019

Disputation Jorge Olarte

Location: Arnimallee 3, SR 119

Dec 05, 2019 | 04:00 PM

Einstein Workshop Polytopes and Algebraic Geometry 2019

This will be a three-day workshop with lectures, presentations and informal discussions on polytopes and their relations to algebraic geometry. It is funded by the Einstein Foundation Berlin , as part of Francisco Santos' Einstein Visiting Fellowship at FU Berlin for 2016-2020. It is one of the activities in the thematic Einstein semester Varieties Polyhedra and computations .

Dec 02, 2019 - Dec 04, 2019

INCOME2019

Location: Schankhalle, Berlin, Germany

Nov 25, 2019 - Nov 29, 2019

Colloquium in Honor of Rupert Klein’s 60th Birthday

Location: Zuse Institute Berlin (ZIB), Takustraße 7, 14195 Berlin

Nov 18, 2019 - Nov 19, 2019
Nov 05, 2019 | 04:15 PM

ICSB 2019

Location: Okinawa, Japan

Nov 01, 2019 - Nov 05, 2019
Oct 24, 2019 - Oct 25, 2019

MATH+ Vortragsreihe: Dr. Nora Molkenthin

Dr. Nora Molkenthin, Max-Planck-Institut für Dynamik und Selbstorganisation, Göttingen Collective formation processes of dynamic networks Abstract : In systems with many units, the structure of their interaction often has significant impact on the behaviour of the system as a whole. Complex networks provide a unique tool for describing and investigating such systems, especially in the absence of symmetry. However, many of the available methods are more focused on specific static networks, while for many of the most interesting systems the interaction structure itself is subject to dynamical changes. In my work I have found many examples where the study of the dynamics giving rise to the interaction structures gave deep and novel insights into systems. In this talk I will focus on two examples from social networks and on-demand ride-sharing. The wide range of examples where this approach has been successful, leads to the question how these individual examples could be reflected in a wider theory for studying dynamical structure formation.

Location: Institut für Mathematik, Arnimallee 7, Raum E31, 14195 Berlin

Oct 08, 2019 | 04:15 PM

MATH+ Vortragsreihe: Dr. Nicolas Behr

Dr. Nicolas Behr, IRIF, Université Paris Diderot, France Rewriting theory for the social and life sciences Abstract : Somewhat surprisingly, despite the widespread use of models based upon transformations of graph-like objects in the applied sciences (chemical reaction systems, network models, random graph ensembles, tissue models, agent-based models, ...), the underlying theory and mathematics of so-called rewriting over adhesive categories appears to be relatively little known. In this talk, I will give a concise introduction to modern rewriting theory, and I will present two novel mathematical extensions of this framework: so-called rule algebras and tracelets for rewriting theories. Rule algebras permit to formulate a universal framework of continuous-time Markov chains arising from random transformation systems of graph-like structures, yielding a new tool-set for analyzing these systems, including in particular so-called combinatorial conversion (which permits to derive ODEs for the evolution of the statistical moments of pattern-counting observables). Tracelets on the other hand provide a mathematical formalism to extract high-level causal information from specifications of rewriting systems in terms of transformation rules and their base rates, sometimes referred to as "synthesis of explanations" (as opposed to the more standard approach of extracting statistical information from simulations). Originally developed as a precise mathematical implementation of the notion of pathways in biochemical reaction systems, this methodology aims to find high-level causal structures in sequences of rule compositions that permit to understand the dynamical behaviors of the typically highly complex random transformation system at hand. I will illustrate these novel concepts with application examples (such as a voter model of opinion formation) and provide some perspectives for high-performance software implementations of both the rule algebra and tracelet methodologies.

Location: Institut für Mathematik, Arnimallee 7, Raum E31, 14195 Berlin

Oct 08, 2019 | 02:15 PM

MATH+ Vortragsreihe: Dr. Sarah Wolf

Dr. Sarah Wolf, Global Climate Forum (GCF) Mathematik für Nachhaltigkeit - Entscheidungsunterstützung mit Hilfe agenten-basierter Modellierung Zusammenfassung: In meiner Forschung geht es um die Frage, wie Green Growth und eine nachhaltige Entwicklung erreicht werden können - ein Beispiel ist die derzeit viel diskutierte "Verkehrswende". Ökonomische Modelle, die in der Politikberatung vielfach eingesetzt werden, können oft per Konstruktion keinen Übergang aus einer gegebenen Ausgangslage hin zu einer strukturell veränderten Situation darstellen. Eine Alternative bieten agenten-basierte Modelle (ABM), die ein komplexes sozio-ökologisches Systems auf der Mikro-Ebene darstellen. Das Verhalten des Gesamtsystems betrachtet man dann mit Hilfe von Simulationen. Empirisch fundierte, hochaufgelöste ABM, die sich dazu eignen, mögliche Wege zu einer Verkehrswende (o.ä.) mit Stakeholdern zu diskutieren, bringen mehrere Herausforderungen mit sich: Die effiziente Parallelisierung solcher Simulationen ist weitgehend unerforscht, da die Interaktionsstrukturen der Agenten soziale Netzwerke mit geographischen Bedingungen mischen und daher von den (z.B. regelmäßigen Gitter-)Strukturen vieler HPC-Anwendungen abweichen. Die Analyse der Dynamik dieser Systeme wird dadurch erschwert, dass die Freiheit in der Wahl der Annahmen bei Definition und Implementierung eines Modells sehr groß ist. Mich interessieren grundlegende Modellstrukturen und Konzepte, mit denen man diese Herausforderungen angehen kann. Solche Modelle auf Basis von mathematischen Grundstrukturen sowohl einfacher implementieren als auch besser und schneller analysieren zu können, wäre nämlich hilfreich für eine wissenschaftliche Unterstützung von EntscheidungsträgerInnen. Diese können in "Decision Theatre"-Diskussionen mit dem Modell experimentieren und Folgen von verschiedenen Entscheidungen sofort eruieren. Umgekehrt können sie die weitere Modellentwicklung durch ihre Expertise aus der Praxis unterstützen.

Location: Institut für Mathematik, Arnimallee 6, Raum 031, 14195 Berlin

Oct 07, 2019 | 04:15 PM

MATH+ Vortragsreihe: Dr. Nataša Conrad

Dr. Nataša Conrad, Zuse Institute Berlin Dynamische Systeme und Datenwissenschaften in den Sozial- und Geisteswissenschaften Abstract: In this talk, I will present my main research results on the topic of modeling, simulation and analysis of complex social systems. In particular, I will focus on the study of processes of change on/of these systems and approaches I have developed for their studying. I will demonstrate the applicability of these methods on real-world examples from humanities and social sciences.

Location: Institut für Mathematik, Arnimallee 6, Raum 031, 14195 Berlin

Oct 07, 2019 | 02:15 PM

Workshop: Theory and applications of Boolean interaction networks

Location: Institute of Mathematics, Freie Universität Berlin, Arnimallee 6, SR 032, 14195 Berlin

Sep 12, 2019 - Sep 13, 2019

First Berlin - Leipzig Workshop on Fluctuating Hydrodynamics

Link to the workshop website

Location: Max Planck Institute for Mathematics in the Sciences and Institute of Mathematics, Freie Universität Berlin

Aug 26, 2019 - Aug 30, 2019
Aug 19, 2019 - Aug 30, 2019

SciCADE 2019

Location: Innsbruck, Austria

Jul 22, 2019 - Jul 26, 2019

ISMB/ECCB 2019

Location: Basel, Switzerland

Jul 21, 2019 - Jul 25, 2019

IBSB 2019

Location: Kyoto, Japan

Jul 14, 2019 - Jul 17, 2019
Jun 19, 2019 - Jun 21, 2019

Long Night of Science 2019

Location: Freie Universität Berlin

Jun 15, 2019 | 05:00 PM - 11:59 PM

Noether Konferenz 2019

Location: Arnimallee 3-5, Hörsaal 001, 14195 Berlin

Jun 04, 2019 - Jun 05, 2019

RECOMB 2019

Location: Washington, D.C., USA

May 05, 2019 - May 08, 2018

Honorary Colloquium on the occasion of Peter Deuflhard's 75 Birthday

Location: Zuse Institute Berlin (ZIB), Takustraße 7, 14195 Berlin

May 03, 2019 | 03:45 PM

HSB 2019

Location: Prague, Czech Republic

Apr 06, 2019 - Apr 07, 2019
Feb 14, 2019 | 03:00 PM

Oliver Labs: Cubic Surface Models and their Historical and Mathematical Background

In the 19 th century, cubic surfaces - defined by an implicit equation of degree three in three variables - were among the first interesting examples in the development of modern algebraic geometry. A well-known result by Arthur Cayley and George Salmon is that any smooth cubic contains exactly 27 straight lines. Other prominent facts are the classification of all cubic surfaces w.r.t. their singularities by Ludwig Schläfli, and Alfred Clebsch's birational map between the plane and such surfaces where six points play an essential role. The talk will present both the historical and the mathematical background of classical hand-crafted and also recent 3d-printed cubic surface models. Some of their fascinating features such as the movement of the straight lines as the surfaces vary may very well be visualized using interactive software. In 2011 and 2014, the speaker created two versions of a complete series of more than 45 types of 3d-printed cubic surface models. Copies of these are now part of several university collections such as those at Lisbon, Strasbourg, Dresden, and Mainz, as well as at the IHP at Paris. He will bring some examples of these sculptures with him in order to illustrate facts which may better be appreciated when seeing and touching a real object.

Location: HS 001/Arnimallee 3 (Tea/coffee will be served from 16:45 in room 006/A3.)

Jan 31, 2019 | 05:15 PM
Jan 20, 2019 - Jan 26, 2019
Dec 13, 2018 | 03:00 PM

Guest Seminar WS1819

Location: A6/SR 007/008

Nov 22, 2018 | 02:00 PM c.t. - 04:00 PM
Nov 15, 2018 | 10:00 AM c.t. - 12:00 PM
Nov 08, 2018 | 10:00 AM c.t. - 12:00 PM

Guest Seminar WS1819

Location: A6/SR 007/008

Nov 01, 2018 | 02:00 PM c.t. - 04:00 PM
Nov 01, 2018 | 10:00 AM c.t. - 12:00 PM

Einstein Workshop Geometric and Topological Combinatorics

Location: Freie Universität Berlin, Königin Luise Straße 24/26, 14195 Berlin

Oct 29, 2018 - Oct 31, 2018

ICSB 2018

Location: Lyon, France

Oct 28, 2018 - Nov 01, 2018
Oct 25, 2018 | 10:00 AM c.t. - 12:00 PM

CSB Seminar Series

Location: Charité, Invalidenstraße 42, room 312a, 10115 Berlin

Oct 25, 2018 - Feb 07, 2019
Oct 18, 2018 | 10:00 AM c.t. - 12:00 PM

Summer school "Modelling of Mass and Energy Transport"

Location: Institut für Mathematik, Arnimallee 6, Room 017, 14195 Berlin

Oct 08, 2018 - Oct 12, 2018
Sep 27, 2018 | 03:00 PM

ECCB 2018

Location: Athens, Greece

Sep 08, 2018 - Sep 12, 2018
Jul 23, 2018 - Jul 27, 2018

DD XXV

Location: St. John's, Newfoundland, Canada

Jul 23, 2018 - Jul 27, 2018

Frank Neumann: Hochschild cohomology of dg-categories and spectral sequences

Location: SR 007/008, Arnimallee 6 (Tee/coffee will be served from 15:45 in room 006/A3)

Jul 18, 2018 | 04:15 PM

ISMB 2018

Location: Chacago, United States

Jul 06, 2018 - Jul 10, 2018

SBMC 2018

Location: Bremen, Germany

Jul 04, 2018 - Jul 06, 2018

Yorck Sommerhäuser: Hopf Algebras - A short introduction

Location: HS 001/A3 (Tee/coffee will be served from 15:45 in room 006/A3).

Jul 03, 2018 | 04:15 PM

Bernd Kreussler: Means, Braids and Triangle Equations

Location: HS 001, A3 (Tea & coffee will be served from 4:45 pm in room 006, A3)

Jun 28, 2018 | 05:15 PM
Jun 09, 2018 | 05:00 PM - 11:59 PM

Encuentro Colombiano de Combinatoria ECCO 2018

Günter M. Ziegler (FU Berlin): „Polytopes — Extremal Examples and Combinatorial Parameters“

Location: Universidad del Norte, Barranquilla, Colombia

Jun 05, 2018 - Jun 16, 2018
May 08, 2018 | 04:15 PM

IRI-Schering Colloquium "Organoids - Life in 3D"

Location: IRI Life Sciences, Philippstr. 13, Michaelis Building (No 18), Maud Menten Hall (3rd Floor), 10115 Berlin

May 01, 2018 - Oct 31, 2018

Prof. Ligang Liu: Progressive Parameterizations

Location: FU Berlin | Arnimallee 6 | Raum 108/109

Apr 12, 2018 | 04:15 PM

aDVANCES IN SYSTEMS AND SYNTHETIC BIOLOGY 2018

Modelling Complex Biological Systems in the Context of Genomics Thematic Research School

Location: Évry, France

Mar 19, 2018 - Mar 23, 2018

Einstein Workshop Discrete Geometry and Topology

This will be a four day workshop with lectures, presentations and informal discussions on discrete geometry and topology, and related topics (combinatorial topology, computational geometry, polytope theory). It is primarily funded by the Einstein Foundation Berlin , as part of Francisco Santos' Einstein Visiting Fellowship at FU Berlin for 2016-2019. Additional funding is provided by the project  Discretization in Geometry and Dynamics  (SFB Transregio 109) and the  Berlin Mathematical School . Read more.

Location: Freie Universität Berlin

Mar 13, 2018 - Mar 16, 2018
Mar 12, 2018 - Mar 14, 2018

Defense Lauri Loiskekoski

Location: Seminar Room Arnimallee 2 14195 Berlin

Dec 21, 2017 | 02:00 PM

Ann-Sofie Fisker: Designing with Elastic Splines

Location: FU Berlin | Arnimallee 6 | Raum 108/109

Dec 14, 2017 | 03:00 PM

Open-Acess-World-Café

Location: Freie Universität Berlin, Seminarzentrum, Raum: L 113 und L 116 (Erdgeschoss), Otto-von-Simson-Str. 26 (Silberlaube), 14195 Berlin

Oct 25, 2017 | 01:00 PM - 04:00 PM

CMSB 2017

Location: Darmstadt, Germany

Sep 27, 2017 - Sep 29, 2017