olderdates

Heidelberg Laureate Forum 2016

Location: Heidelberg

Sep 18, 2016 - Sep 23, 2016
Jul 28, 2016
Jul 24, 2016 - Jul 31, 2016

Mathematics of Jirí Matoušek

Location: Charles University, Prague

Jul 23, 2016 - Jul 28, 2016
Jun 18, 2016 - Jun 22, 2016

John von Neumann Lecture 2016

Location: Universität Münster

Jun 16, 2016

DMV & GAMM Jahrestagung

Location: TU Braunschweig

Mar 07, 2016 - Mar 11, 2016
Feb 12, 2016 | 04:00 PM
Feb 02, 2016

Borel Seminar

Location: Les Diablerets, Switzerland

Jan 24, 2016 - Jan 29, 2016
Dec 14, 2015
Dec 11, 2015 | 04:00 PM

7. Thüringer Geometrietag

Location: Friedrich-Schiller-Universität, Jena

Dec 04, 2015 - Dec 05, 2015

Discrete Geometry Seminar - Moritz Schmitt

Location: Seminar Room, Arnimallee 2, FU Berlin

Oct 29, 2015 | 02:00 PM

Discrete Geometry Seminar - Michal Lason

Location: Seminar Room, Arnimallee 2, FU Berlin

Oct 22, 2015 | 02:00 PM

Discrete Geometry Seminar - Alexander Engström

Location: Seminar Room, Arnimallee 2, FU Berlin

Oct 15, 2015 | 02:00 PM

Geometry and Symmetry Conference

The conference will celebrate the 60th birthdays in 2015 of  Karoly Bezdek  (University of Calgary, Canada and University of Pannonia, Hungary) and  Egon Schulte  (Northeastern University, USA). The theme of the conference will be “Geometry and Symmetry”, with emphasis on recent progress on aspects of discrete geometry in which Egon and Karoly have made remarkable contributions. The program of the conference will consist of invited lectures and contributed talks.

Location: Veszprém, Hungary

Jun 29, 2015 - Jul 03, 2015

Tsukerman - Circumcenter of mass

Location: Seminar Room, Arnimallee 2, FU Berlin

Jun 18, 2015 | 02:15 PM

Lange Nacht der Wissenschaften

Location: Arnimallee 6, FU Berlin

Jun 13, 2015 | 05:00 PM
Jun 12, 2015 | 01:30 PM

Discrete Geometry Seminar- Samuel Fionrini

Location: Seminar Room, Arnimallee 2, FU Berlin

Jun 11, 2015 | 02:15 PM
May 21, 2015 | 02:15 PM

Distributed Processes on Scale-Free Networks -- Tobias Friedrich

Lecture - 14:15   Tobias Friedrich -  HPI, Universität Potsdam  Distributed Processes on Scale-Free Networks Abstract:   The node degrees of large real-world networks often follow a power-law distribution. Such scale-free networks can be social networks, internet topologies, the web graph, power grids, or many other networks from literally hundreds of domains. The talk will introduce three mathematical models of scale-free networks (preferential attachment graphs, Chung-Lu graphs, hyperbolic random graphs) and analyze some of their properties. We then study three distributed processes and algorithms on these network models (rumor spreading, load balancing, de-anonymization) and present several open problems. The talk assumes no prior knowledge about scale-free networks or distributed computing.  Colloquium - 16:00   Fidaa Abed -  Technische Universität Berlin  Optimal Coordination Mechanisms for Multi-Job Scheduling Games Abstract:   We consider the unrelated machine scheduling game in which players control subsets of jobs. Each player's objective is to minimize the weighted sum of completion time of her jobs, while the social cost is the sum of players' costs. The goal is to design simple processing policies in the machines with small coordination ratio, i.e., the implied equilibria are within a small factor of the optimal schedule. We work with a weaker equilibrium concept that includes that of Nash.  We first prove that if machines order jobs according to their processing time to weight ratio, a.k.a. Smith-rule, then the coordination ratio is at most 4, moreover this is best possible among nonpreemptive policies. Then we establish our main result. We design a preemptive policy,  externality , that extends Smith-rule by adding extra delays on the jobs accounting for the negative externality they impose on other players.. For this policy we prove that the coordination ratio is 1+ φ ≈ 2.618, and complement this result by proving that this ratio is best possible even if we allow for randomization or full information. Finally, we establish that this externality policy induces a potential game and that an ε-equilibrium can be found in polynomial time. An interesting consequence of our results is that an ε-local optima of $R|\,|\sum w_jC_j$ for the jump (a.k.a. move) neighborhood can be found in polynomial time and are within a factor of 2.618 of the optimal solution. The latter constitutes the first direct application of purely game-theoretic ideas to the analysis of a well studied local search heuristic. 

Location: @TU MA 041

May 11, 2015 | 02:15 PM
May 07, 2015 | 02:15 PM

Hodge theory and combinatorics - Adiprasito

Location: Seminar Room, Arnimallee 2, FU Berlin

Apr 28, 2015 | 02:15 PM
Apr 24, 2015 | 04:00 PM
Apr 23, 2015 | 02:15 PM
Apr 20, 2015 | 02:15 PM

ERC Workshop "SD-Models"

Location: FU Berlin

Mar 23, 2015 - Mar 26, 2015
Feb 16, 2015 - Feb 17, 2015

Flag Vector Spaces of Polytopes, Spheres and Eulerian Lattices

Location: Seminar Room, Arnimallee 2, FU Berlin

Feb 12, 2015 | 02:15 PM
Feb 06, 2015 | 01:00 PM
Feb 02, 2015 | 02:15 PM

Moduli of Tropical Plane Curves- Sarah Brodsky

Location: Seminar Room, Arnimallee 2, FU Berlin

Jan 29, 2015 | 02:15 PM

Topology-Seminar-Configuration Spaces of Graphs

Location: Seminar room in the Villa, Arnimallee 2, 14195 Berlin

Jan 28, 2015 | 05:00 PM
Jan 26, 2015 | 02:15 PM

Preisverleihung

Location: TU Berlin, Audimax, Straße des 17. Juni 135

Jan 23, 2015 | 02:00 PM c.t. - 04:00 PM

"What is ... the probabilistic method?"

Location: @BMS Loft in Urania

Jan 23, 2015 | 01:00 PM
Jan 22, 2015 | 02:15 PM

Improving bistellar simplification

Location: Seminar room in the Villa, Arnimallee 2, 14195 Berlin

Jan 21, 2015 | 05:00 PM
Jan 18, 2015 - Jan 31, 2015

Generalized Schur-Horn orbitopes and zonoids

Location: Seminar Room, Arnimallee 2, FU Berlin

Jan 15, 2015 | 02:15 PM

Eliminating Tverberg Points: An Analogue of the Whitney Trick

Location: Seminar room in the Villa, Arnimallee 2, 14195 Berlin

Jan 14, 2015 | 05:00 PM

Phirotopes & Almost-Fisher Families

Location: Freie Universität Berlin, Takustr, 9, 14195 Berlin, room: 005

Jan 12, 2015 | 02:15 PM

Salon des Einstein-Zentrums Mathematik (ECMath)

Location: Urania Berlin, BMS Lounge, An der Urania 17, 10787 BErlin

Jan 09, 2015 | 04:00 PM

Discrete Geometry Seminar- Victor M.Buchstaber

Location: Seminar Room, Arnimallee 2, FU Berlin

Jan 08, 2015 | 02:15 PM

The maximum likelihood degree and data discriminants of likelihood equations

Location: Seminar room in the Villa, Arnimallee 2, 14195 Berlin

Jan 07, 2015 | 05:00 PM

Geometrietag an der TU Dresden

Location: TU Dresden

Dec 04, 2014 - Dec 05, 2014

ICM 2014

Location: Seoul, Korea

Aug 13, 2014 - Aug 21, 2014
Oct 07, 2013 - Oct 09, 2013
Sep 09, 2013 - Sep 13, 2013
Aug 12, 2013 - Aug 17, 2013
Aug 07, 2013 - Aug 10, 2013
Jul 22, 2013 - Aug 02, 2013
Jul 01, 2013 - Jul 05, 2013
Jun 18, 2013 - Jun 22, 2013
Jun 17, 2013 - Jun 19, 2013
Jun 08, 2013

Euler-Lecture 2013

Location: Castle Theatre, Potsdam-Sanssouci, Neues Palais

May 31, 2013 | 02:00 PM

Syzygies in Berlin

Location: ZIB Berlin

May 27, 2013 - May 31, 2013

"GMZ 50"

Location: ZIB Berlin

May 25, 2013

Simons Lecture "KliMathematik"

Location: FU Berlin, Henry Ford Bau

May 23, 2013 | 05:00 PM
Apr 24, 2013 | 05:00 PM