Conférences - Théorie des graphes et combinatoire

Banff International Research Station for Mathematical Innovation and Discovery (BIRS)

The systematic study of random graphs commenced with the seminal work of Erd" os and Renyi in the 1960s. Beyond the classical connections and synergies between random graphs and computer science, over the last few years a new exciting connection between random graphs and statistical inference has been discovered. These connections have led to important new insights on computational problems and statistical inference problems and to new methods for the analysis of random graphs or random discrete structures in general. In addition, since the late 1990s an insightful approach called the cavity method by physicists has been applied to put forward predictions on structural properties of random graphs and their phase transitions. More recently, it has inspired new algorithms for statistical inference problems such as message passing algorithms and novel spectral algorithms. With this workshop we hope to stimulate research and foster new exciting interdisciplinary collaborations between researchers with different backgrounds and expertise in random graphs, computer science, probability, statistics, statistical inference and information theory.

Cours et évènements pour étudiants en mathématiques,    Statistique, Théorie des jeux

Banff International Research Station for Mathematical Innovation and Discovery (BIRS)

Despite the enormous commercial potential that quantum computing presents, the existence of large-scale quantum computers also has the potential to destroy current security infrastructures. Post-quantum cryptography aims to develop new security protocols that will remain secure even after powerful quantum computers are built. This workshop focuses on isogeny-based cryptography, one of the most promising areas in post-quantum cryptography. In particular, we will examine the security, feasibility and development of new protocols in isogeny-based cryptography, as well as the intricate and beautiful pure mathematics of the related isogeny graphs and elliptic curve endomorphism rings. To address the goals of both training and research, the program will be comprised of keynote speakers and working group sessions.

Cours et évènements pour étudiants en mathématiques,    Cryptographie, blockchain et sécurité de l'information

The Fields Institute for Research in Mathematical Sciences

Quantum mechanics has led to some revolutionary changes in computing and information processing. Over the past decades, there has been a surge of research, mostly by physicists and computer scientists, on how quantum computers could outperform their classical counterparts. It is becoming apparent, however, that many of the problems considered have mathematical aspects, and a number of questions in combinatorics are arising as the field of quantum information theory matures. The goal of this workshop is to foster cross-collaboration among mathematicians, physicists and computer scientists, in order to explore the deep connections between quantum information and algebraic graph theory.

Algèbre,    Mécanique quantique et l'information quantique

Universitat Politècnica de Catalunya

In the spirit of EUROCOMB’01 (Barcelona), EUROCOMB’03 (Prague), EUROCOMB’05 (Berlin), EUROCOMB’07 (Seville), EUROCOMB’09 (Bordeaux), EUROCOMB’11 (Budapest), EUROCOMB’13 (Pisa), EUROCOMB’15 (Bergen), EUROCOMB’17 (Vienna) and EUROCOMB’19 (Bratislava), the current edition of the conference will be a showcase of the most recent advances in Combinatorics and Graph Theory including applications in other areas of Mathematics, Computer Science and Engineering.

Email.: eurocomb.2021@event.upc.edu

Algebraic Combinatorics, Combinatorial Geometry, Combinatorial Number Theory, Combinatorial Optimization, Designs and Configurations, Enumerative Combinatorics, Extremal Combinatorics, Graph Theory, Ordered Sets, Probabilistic Combinatorics, Random Discrete Structures, Topological Combinatorics

University of Tübingen

Graph Drawing is concerned with the geometric representation of graphs and constitutes the algorithmic core of Network Visualization. Graph Drawing and Network Visualization are motivated by applications where it is crucial to visually analyze and interact with relational datasets. Examples of such application areas include data science, social sciences, web computing, information systems, biology, geography, business intelligence, information security, or software engineering. GD has been the main annual event in this area for more than 20 years. Its focus is on combinatorial and algorithmic aspects of graph drawing as well as the design of network visualization systems and interfaces. Researchers and practitioners working on any aspects of graph drawing and network visualization are invited to contribute papers and posters and to participate in the symposium and the graph drawing contest.

graph drawing, network visualization, combinatorics, experiments

Banff International Research Station for Mathematical Innovation and Discovery (BIRS)

Advances in data collection and social media have led to network and graph data becoming available in many areas, including social sciences, biological sciences, and engineering. Understanding and modeling network structure, as well as conducting rigorous statistical inference to assess uncertainty, can provide crucial insights into the dynamics and interaction mechanisms of the system. Statistical network analysis to date has largely focused on the setting where a single network is observed as a noisy version of some underlying structure of interest. This setting in itself is challenging, requiring adaptation of existing statistical frameworks to networks and bridging the gap between theoretically optimal performance and computational feasibility. The workshop will start by covering recent advances in this setting.

Cours et évènements pour étudiants en mathématiques,    Statistique, Théorie des jeux

Friedrich-Schiller-University Jena

We are pleased to announce the 8th German-Polish Conference on Optimization – Methods and Applications, organized by the Friedrich Schiller University Jena and held at "Hotel am Schloss" in Apolda, Germany on September 20–24, 2021. The present conference is a continuation of the German-Polish Conference on Optimization series held in Żagań (1999), Cottbus (2002), Będlewo (2005), Moritzburg (2009), Kraków (2011), Wittenberg (2014) and Będlewo (2017).

Conference Office;     Tél.: [+49 3641 946200];     Email.: nadin.friebe@uni-jena.de

theory of smooth and non-smooth optimization, variational problems and variational inequalities, optimal control, inverse and ill-posed problems, combinatorial optimization, vector optimization, solution methods and applications of optimization

Recherche opérationnelle,    Analyse

University of Toulouse

The ADT 2021 conference focus is on algorithmic decision theory broadly defined, seeking to bring together researchers and practitioners coming from diverse areas of Computer Science, Economics and Operations Research in order to improve the theory and practice of modern decision support. The conference topics include research in Algorithms, Argumentation Theory, Artificial Intelligence, Computational Social Choice, Database Systems, Decision Analysis, Discrete Mathematics, Game Theory, Machine Learning, Matching, Multi-agent Systems, Multiple Criteria Decision Aiding, Networks, Optimization, Risk Management, and Utility Theory.

CIRM – Centre International de Rencontres Mathématiques

Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)

Cours et évènements pour étudiants en mathématiques,    Recherche opérationnelle

University of North Carolina, Greensboro, NC

These are a series of combinatorial workshops, held once per semester, each on a Saturday. The series began with its first meeting in spring 2010. They rotate among the universities in and around the Research Triangle. Participants come from numerous colleges and universities within a few hours drive, and some from even farther away. These workshops are funded by the National Science Foundation, in particular enabling us to bring in four exciting speakers to give one hour talks each time as well as funding travel expenses for participants.

Paderborn University, Paderborn, Germany

The Colloquium on Combinatorics is a forum that brings together young researchers and well established scientists. The colloquium will cover all areas of Combinatorics and Discrete Mathematics in a broad sense, including combinatorial aspects in Algebra, Geometry, Optimization and Computer Science. All participants are cordially invited to give a scientific talk

Cours et évènements pour étudiants en mathématiques,    Algèbre

Banff International Research Station for Mathematical Innovation and Discovery (BIRS)

Graphs are the standard mathematical model of many real-world entities: computer networks, road and highway networks, drainage systems, river networks, electrical networks, and so on. In some cases, these highly-complicated graphs are contained in the product of two or more much simpler graphs. In a recent breakthrough, it was shown that this is the case for planar or near-planar graphs like those that model river, road, and highway networks; any such graph is contained in the product of a simple tree-like graph and a path. This product structure gives deep insight into these graphs and their properties, allowing a host of mathematical and algorithmic tools to be applied to these graphs. The goal of this workshop is to continue the search for product structure in more general classes of graphs as well as to find new methods to exploit such product structure mathematically and algorithmically, when it is present.

The Fields Institute for Research in Mathematical Sciences

Scheduled as part of the Thematic Program on Trends in Pure and Applied Model Theory

Algèbre,    Cours et évènements pour étudiants en mathématiques

The Fields Institute for Research in Mathematical Sciences

Algèbre,    Cours et évènements pour étudiants en mathématiques

CIRM – Centre International de Rencontres Mathématiques

This workshop, sponsored by AIM and the NSF, will be devoted to spectral graph theory and its extensions to digraphs and hypergraphs.

The University of Melbourne

The 43rd Australasian Combinatorics Conference (43ACC) will be held at The University of Melbourne, Australia, 13-17 December 2021. Researchers in any area of discrete mathematics and its applications are warmly invited to attend this conference and give talks. Contributed talks will be around 20 - 25 minutes in length including time for questions. ACC is the annual conference of the Combinatorial Mathematics Society of Australasia (CMSA), which was called the Australasian Conference on Combinatorial Mathematics and Combinatorial Computing (ACCMCC) from 1989 to 2019. Past and future editions of this international conference can be found at http://combinatorics-australasia.org/conferences.html.

Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)

ICERM

Braid groups and their generalizations play a central role in a number of places in 21st-century mathematics. In modern representation theory, braid groups have come to play an important organizing role, somewhat analogous to the role played by Weyl groups in classical representation theory. Recent advances have established strong connections between homological algebra (t-structures and stability conditions), geometric representation theory (Hilbert schemes, the Hecke category, and link homologies), and algebraic combinatorics (shuffle algebras, symmetric functions, and also Garside theory). Braid groups appear prominently in many of these connections. The goal of this workshop will be to bring experts in these different areas together to both communicate recent advances and also to formulate important questions for future work.

Tél.: [401 863 5030];     Email.: info@icerm.brown.edu

Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)

CIRM – Centre International de Rencontres Mathématiques

CONFERENCE

Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)

Cours et évènements pour étudiants en mathématiques,    Statistique, Théorie des jeux

AGH University of Science and Technology, Faculty of Applied Mathematics

This is a subsequent meeting in the series of former Cracow Conferences on Graph Theory held in Niedzica (1990), Zgorzelisko (1994), Kazimierz Dolny (1997), Czorsztyn (2002), Ustroń (2006), Zgorzelisko (2010) and Rytro (2014, 2018). This event is also exceptional, as it shall provide opportunity to celebrate 70th birthday of Mariusz Woźniak.

UiT - The Arctic University of Norway

The Nordic Combinatorial Conference (NORCOM) is a triennial scientific meeting covering the fields of combinatorics and discrete mathematics, interpreted broadly, with the arrangement rotated among the five Nordic countries. The conference is a venue for Nordic as well as foreign combinatorialists to get together and interact in a relaxed atmosphere. Plenary talks are given by distinguished international scholars, and short presentations are given by participants.

Local organizer Trygve Johnsen;     Tél.: [+4792891013];     Email.: Trygve.Johnsen@uit.no

Combinatorics, coding theory, discrete mathematics.

At the conference we will be celebrating the 65th birthday of Paul Terwilliger. As such, the general theme of this conference will be the mathematical topics that Paul has worked on over the years (which all have relationships to the q-Onsager algebra).

distance-regular graphs, association schemes, the subconstituent algebra, Leonard pairs, tridiagonal pairs, billiard arrays, lowering-raising triples, the tetrahedron algebra, the Onsager algebra, the equitable presentation of Uq(sl2), the q-tetrahedron algebra, the q-Onsager algebra in mathematical physics, the universal Askey-Wilson algebra

Physique mathématique,    Algèbre

TU Wien

The Algorithmic and Enumerative Combinatorics conference is the homonymous special research program's (SFB) concluding event.

CIRM – Centre International de Rencontres Mathématiques

Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)