Conférences  >  Mathématiques  >  Théorie des graphes et combinatoire

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

ICERM / Brown University

Combinatorial optimization is an active research field in mathematics, with an immense range of applications. This workshop will bring together researchers and leading experts interested in the mathematical foundations of combinatorial optimization algorithms to discuss new tools and methods, in particular regarding the use of algebraic, analytical, and geometric techniques. Special emphasis will be given on polyhedral methods, since they are at the core of several groundbreaking combinatorial optimization results developed in recent years.

Rutgers University

The focus of this workshop is the interaction between 3-manifold topology/geometry and theoretical computer science. Of particular interest is the computational complexity of algorithmic problems in 3-manifold topology. Related topics in low-dimensional topology and theoretical computer science will also be discussed. The program will include introductory lectures as well as flash talks and ample time for discussions and informal interactions.

Géométrie et topologie,    Algorithmes et structures de données

part of EvoStar (Evo*)

The 23rd European Conference on Evolutionary Computation in Combinatorial Optimisation is a multidisciplinary conference that brings together researchers working on applications and theory of evolutionary computation methods and other metaheuristics for solving difficult combinatorial optimisation problems appearing in various industrial, economic, and scientific domains.

Soft computing, algorithmes évolutionnaires, domaine des métaheuristiques, logique floue,    Optimisation, recherche opérationnelle

The goal of this 3-day international workshop is to bring together researchers working on the interplay between digital communication and discrete mathematics. The event is funded by the Netherlands Institute for Research on ICT and is explicitly designed to foster collaborations. The workshop will feature both invited speakers on key topics and contributed talks. The format of the event will facilitate research interactions and networking.

Texas A&M University

CombinaTexas, a combinatorics conference in the South-Central United States, is an annual regional conference on Combinatorics, Graph Theory, and Computing. It is dedicated to the enhancement of both the educational and research atmospheres of the community of combinatorialists and graph theorists in Texas and the surrounding states. The aim of the CombinaTexas series is to increase communication between mathematicians in the region, promote the research of the regional combinatorics community, and provide a forum for presentation and discussion of developments in the field of combinatorics.

KTH Royal Institute of Technology and Stockholm University

The 2023 edition of the Graduate Student Meeting on Applied Algebra and Combinatorics will take place in Stockholm, April 26-28. It will be an opportunity for graduate students and postdocs interested in algebra and combinatorics and their applications to meet each other, communicate their research, and form new collaborations. Over the course of three days, participants will get the chance to take part in minicourses, a poster session, several contributed talks, as well as an open problem session.

Email.: applied.algebra.combinatorics@gmail.com

applied algebra, applied combinatorics

Cours et évènements pour étudiants en mathématiques,    Algèbre

CIRM – Centre International de Rencontres Mathématiques

Middle Tennessee State University, Murfreesboro, TN

The Cumberland Conference on Combinatorics, Graph Theory, and Computing is an annual conference that brings together internationally known researchers, industrial mathematicians and computer scientists, and southeastern university and college professors, post-docs, graduates and undergraduate students, to discuss the latest advances in discrete mathematics and computer science. Efforts are made to include faculty and students from smaller institutions throughout the region

University of Notre Dame

The Fields Institute

The study of Lefschetz properties for Artinian algebras was motivated by the Lefschetz theory for projective manifolds, begun by S. Lefschetz, and well established by the late 1950's. Many of the important Artinian graded algebras appear as cohomology rings of an algebraic variety or manifold, though recent important developments have demonstrated important cases of the Lefschetz properties beyond such geometric settings (such as Coxeter groups or matroids). This renews interest in understanding the Lefschetz property, and Artinian algebras that admit them, systematically.

Algèbre,    Géométrie et topologie

American Institute of Mathematics (AIM)

This workshop, sponsored by AIM and the NSF, is devoted to combinatorial problems about infinite cardinals. There are two types of infinite cardinals to investigate: successors of regular cardinals, most notably ℵ2, and successors of singular cardinals, for example ℵω+1ω+1. The workshop will focus on combinatorial principles such as the tree property, stationary reflection and the effect of consequences on forcing axioms on cardinal arithmetic, in particular what implications they have on the continuum, and the singular cardinal hypothesis (SCH).

The main topics of the workshop are The tree property, its strengthening ITP, stationary reflection how these combinatorial principles interact with SCH; Which consequences of PFA and MM require the continuum to be ℵ2 , and more generally, their effect on cardinal arithmetic; Forcing techniques such as proper iterated forcing and Prikry type forcing.

University of Georgia, Athens, Georgia

The Integers conferences are international conferences held for the purpose of bringing together mathematicians, students, and others interested in combinatorics and number theory.

The Mixed Integer Programming (MIP) Workshop is a single-track workshop highlighting the latest trends in integer programming and discrete optimization, with speakers chosen by invitation. The 2023 edition of the workshop will be the twentieth in the MIP series.

This summer school on high-dimensional expanders is the first event organized in the framework of the EOS-project "High-dimensional expanders and Kac–Moody–Steinberg groups". It consists of 7 short series of lectures by experts in the field and is meant to be accessible to a wide audience of both young and established researchers.

Ramanujan graphs and expander graphs; Bruhat–Tits buildings; Kazhdan's property (T); Hecke algebras; Lattices in p-adic groups; Ramanujan complexes and high-dimensional expanders; Applications

Cours et évènements pour étudiants en mathématiques,    Théorie des nombres, arithmétique

Fields Institute for Research in Mathematical Sciences

The aim of the 18th Workshop on Algorithms and Models for the Web Graph (WAW 2023) is to further the understanding of graphs that arise from the Web and various user activities on the Web, and stimulate the development of high-performance algorithms and applications that exploit these graphs. The workshop will also welcome the researchers who are working on graph-theoretic and algorithmic aspects of citation networks, social networks, biological networks, molecular networks, and the Internet.

Réseaux complexes,    Réseaux, Internet

University of Illinois Urbana-Champaign

Summer School in Graph Coloring, May 23-26; EXCILL IV Conference, May 27-28; Summer School in Algebraic Methods in Combinatorics, May 29-June 1

University of Illinois Urbana-Champaign

Eurandom – Workshop Centre in the area of Stochastics

The study of matrices with random entries started in the 1950’s and has grown into an immense body of literature until today. While the initial focus was on problems in statistical physics, in recent times random matrices have proven to be an important tool also in a variety of other fields like statistics, network analysis, image processing or machine learning. Moreover, there has been great progess in the study of matrices which arise naturally in random graphs, like the adjacency matrix, the Laplacian matrix, or the transition matrix of the random walk on the graph. The recent theoretical advances in this area are remarkable and one of the key goals of the workshop is to understand the information contained in eigenvalues and eigenvectors of high-dimensional random matrices. A second point of focus are applications of tools stemming from random graphs theory that can be used to study the spectrum of random matrices. In this workshop, we provide a platform where young and more senior researchers from the area of random matrices, random graphs and related topics can come together and exchange their research, find new collaborations and learn about different perspectives on the topic.

University of Illinois Urbana-Champaign

Cours et évènements pour étudiants en mathématiques,    Algèbre

CIRM – Centre International de Rencontres Mathématiques

One of the most striking recent results in model theory is Johnson’s classification, in 2020, of fields of finite dp-rank : under purely combinatorial condition (the finiteness of a certain dimension) infinite non algebraically closed fields must come with a definable henselian topology. This result illustrates (and partially explains) the very strong relationship between valuation theory and model theory that has existed since the 1960’s. Valued fields are also at the center of the interaction between model theory number theory and algebraic geometry which blossomed in the past fifteen years. This conference will bring together specialists from the algebraic, arithmetic and the pure model theory communities that all study valued fields, but with very different tools. Our aim is, by ensuring a continued dialog between these communities, to further exchanges and promote new interactions. Its main focus will be on the arithmetic of valued fields, classification and geometric model theory in valued fields and non archimedean tame geometry.

Banach Center

Classical Fourier analysis uses decompositions of functions in terms of linear phases. In recent years it was discovered that for applications in ergodic theory, combinatorics, and number theory, involving patterns such as arithmetic progressions, one has to study correlations of functions with higher order polynomial phases and other more general phases, called nilsequences, which arise from natural dynamical systems on nilmanifolds. This philosophy has helped to make progress in problems that were previously considered intractable, and has resulted in new impressive applications in the above-mentioned areas. In ergodic theory this approach is used to study the limiting behavior of multiple ergodic averages and related multiple recurrence results, in topological dynamics it has led to new structural results, and in combinatorics and number theory it is used to study patterns that can be found in sets of positive density or the set of primes. Also, very recently it has played a decisive role in progress related to the Chowla and Elliott conjectures on correlations of bounded multiplicative functions and the Mobius disjointness conjecture of Sarnak. The aim of the workshop is to introduce the above topics to a wider audience, report on recent developments, and foster collaborations and new insights.

Algèbre,    Géométrie et topologie

CIMPA Research School on Graph Structure and Complex Network Analysis will be held in Nesin Mathematics Village, Şirince, İzmir, Turkey on June 4-16, 2023. Since the works of Watts and Strogatz (1998) on one hand, and Barabási and Albert (1999) on the other, graph theory has become a major mathematical field that provides a framework to handle network properties theoretically and enables us with very powerful tools to model and solve problems on networks. Understanding their graph structure is a key point in deriving efficient algorithms in large networks. In this school, we will cover theoretical aspects of graph structure analysis as well as applications on complex network studies.

Cours et évènements pour étudiants en mathématiques,    Réseaux complexes

University of Manitoba and University of Winnipeg

The general topic of the conference is the theory and application of discrete structures. Its goal is to highlight the most salient trends in the field. The conference will bring together researchers from the various disciplines with which discrete and algorithmic mathematics interact. Particular areas of interest include graphs and digraphs, hypergraphs, matroids, ordered sets, designs, coding theory, enumeration, combinatorics of words, discrete optimization, discrete and computational geometry, lattice point enumeration, combinatorial algorithms, computational complexity, and applications of discrete and algorithmic mathematics, including (but not limited to) web graphs, computational biology, telecommunication networks, and information processing. The conference will follow its usual format. There will be eight plenary talks, one public interest talk, and invited mini-symposia, as well as contributed mini-symposia and talks

Local Organizing Committee co-chair;     Tél.: [+1-204-474-7486];     Email.: karen.gunderson@umanitoba.ca

graphs and digraphs, hypergraphs, matroids, ordered sets, designs, coding theory, enumeration, combinatorics of words, discrete optimization, discrete and computational geometry, lattice point enumeration, combinatorial algorithms, computational complexity

This is a hybrid conference, with free-of-charge registration for all participants, for online & in-person attendance as well.

The conference will focus on the study of discrete mathematical models; e.g. graphs (networks) and hypergraphs, the algorithmic complexity of combinatorial problems, approximability in discrete optimization, but will also include other areas of discrete mathematics, including discrete geometry. During the conference we will celebrate the past 25 years of Semi Online problems. The conference is also dedicated to celebrate the 70-th birthday of Zsolt Tuza.

Algorithmes et structures de données,    Optimisation, recherche opérationnelle

National Cheng Kung University, Tainan, Taiwan

Graph theory and combinatorics are thriving fields, closely connected to many other areas of Mathematics such as probability, topology, numbertheory and geometry, as well as optimization and algorithms. Recently, computational aspects are also becoming more and more central to the core theoretical problems of the field. These include flag algebras, reinforcement learning and other AI approaches, including machine assisted proof verification and computer algebra systems. This workshop will cover a broad spectrum of topics from analytic, enumerative, extremal and probabilistic combinatorics, as well as random graphs. Talks will expose the latest trends and methods in these areas and provide a springboard for future collaboration amongst participants.

Design, analysis, and implementation of geometric algorithms and data structures; Computational complexity of geometric problems; Implementation and experimental evaluation of geometric algorithms and heuristics, including mathematical, numerical, and algebraic aspects; Discrete and combinatorial geometry; Computational topology, topological data analysis, and topological combinatorics; Applications of computational geometry in any field.

Géométrie et topologie,    Mathématiques numériques

University of Ljubljana, Faculty of Mathematics and Physics

The Slovenian Conference on Graph Theory, known also as "the Bled Conference", is returning in its 10th edition in June 2023. This time we again meet in Kranjska Gora. The format of the conference remains largely the same as in the last few incarnations, with a number of distinguished plenary speakers, specialised minisymposia and contributed talks in the general section.

Organizing committee;     Email.: SiCGT23@fmf.uni-lj.si

CRM / Université de Montréal

The mini-courses and research talks will address several themes, including: nonpositively-curved cube complexes, median spaces, (coarsely) Helly spaces and groups, and various combinatorial notions of nonpositive curvature. The first week of the workshop involves mini-courses by Elia Fioravanti (MPI Bonn), Thomas Haettel (Université de Montpellier), Nima Hoda (ENS Paris), Nir Lazarovich (Technion). The second week will be devoted to research talks.

Géométrie et topologie,    Théorie des groupes

Centre de recherches mathématiques (CRM)

The mini-courses and research talks will address several themes, including: nonpositively-curved cube complexes, median spaces, (coarsely) Helly spaces and groups, and various combinatorial notions of nonpositive curvature. The first week of the workshop involves mini-courses by Elia Fioravanti (MPI Bonn), Thomas Haettel (Université de Montpellier), Nima Hoda (ENS Paris), Nir Lazarovich (Technion). The second week will be devoted to research talks.

Cours et évènements pour étudiants en mathématiques,    Géométrie et topologie

The Cologne-Twente Workshop on Graphs and Combinatorial Optimization 2023 welcomes contributions on theory and applications of discrete algorithms, graphs and combinatorial optimization in the wider sense. CTWs are especially intended to let doctoral students and young researchers present the results of their research activities in a friendly and highly interactive atmosphere.

UP FAMNIT: University of Primorska, Faculty of Mathematics, Natural Sciences and Information; UP IAM: University of Primorska, Andrej Marušič Institute; SDAMS: Slovenian Discrete and Applied Mathematics Society

The 11th PhD Summer School in Discrete Mathematics is a summer school aimed to bring together PhD students and early carreer researchers working in various areas of combinatorics. The 11th edition will be held in the coastal city of Koper, Slovenia.

Email.: sygn@upr.si

Algebraic graph theory, spectral graph theory, discrete mathematics, algebraic combinatorics.

Théorie des groupes,    Algèbre

Bioinformatics and computational biology; Coding and data compression; Combinatorics on words; Data mining; Information retrieval; Natural language processing; Pattern discovery; String algorithms; String processing in databases; Symbolic computing; Text searching and indexing

University of Gdansk, Gdansk University of Technology

Email.: gwgt@ug.edu.pl

The conference is supported by le conseil régional de Bourgogne-Franche-Comté, l'Université Bourgogne - Franche-Comté, Dijon Métropole, Università degli Studi di Firenze, l'université Franco Italienne, le Laboratoire d'Informatique de Bourgogne, l'Agence Nationale de la Recherche (Project ANR Pics), National Science Foundation and National Security Agency.

The goal of the conference is to bring together researchers interested in design theory, finite geometry, graph theory, algebraic combinatorics and their applications to communication and cryptography, especially to codes (error-correcting codes, quantum codes, network codes, etc.). The conference will give the opportunity to research faculty and young researchers in discrete mathematics to learn about the latest developments in combinatorics and its contemporary applications in communication theory and information security, and to explore new directions for their future work.

ICMS - International Centre for Mathematical Sciences

The principal objective of the workshop is to bring together researchers in the relevant areas to consolidate recent advances, present new results and encourage collaborations on extensions of recent work or new ideas.

Géométrie et topologie,    Réseaux complexes

University of Wyoming

The Graduate Research Workshop in Combinatorics (GRWC) is an annual two-week collaborative research workshop for advanced graduate students and postdocs from all areas of combinatorics. Participants work in small collaborative groups with faculty and postdocs on research problems from across the discipline. The workshops also host a variety of professional development workshops to prepare students and postdocs for industrial and academic careers. Participants have come from institutions around the world.

Email.: Combinatorics.Workshop@gmail.com

combinatorics, graph theory, algebraic combinatorics, enumeration, computational combinatorics, combinatorial matrix theory

The International Centre for Mathematical Sciences (ICMS)

This event is a continuation of the first ICMS workshop held at ICMS on the same topic, in September 2019, and will build upon the existing links between operator algebras, quantum theory and optimisation.

Mécanique quantique et l'information quantique,    Analyse

Banach Center

.algebraic-geometry, combinatorics, number-theory

American Institute of Mathematics (AIM)

This workshop, sponsored by AIM and the NSF, will be devoted to the recent developments in the intersection of Khovanov-Rozansky homology, affine Springer fibers, Hilbert schemes and link homology, and combinatorics.

Algèbre,    Géométrie et topologie

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

The workshop is concerned with geometric objects arising from polynomial equations known as algebraic curves. Such curves have been studied extensively since the 19th century, but recent developments in combinatorics have led to a plethora of new techniques and solutions to major problems in the field. Bringing together experts from classical algebraic geometry and the adjacent combinatorial areas, the workshop aims to bridge the different points of views, identify key open problems in the field, and to examine how progress can be achieved via a combination of old and new tools.

Géométrie et topologie,    Calcul infinitésimal, équations différentielles et intégrales

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

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.

CIRM – Centre International de Rencontres Mathématiques

University of Haifa

Enumerative combinatorics is a dynamic subfield of the mathematical sciences with many challenging research problems, ingenious and sophisticated techniques, and important applications in various scientific fields. Questions from a broad range of areas, including algebra, topology, probability, computer science, physical, chemical and biological sciences, have some surprising hidden combinatorial structures that require enumerative methods for their solution.

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

Géométrie et topologie,    Algèbre

Isaac Newton Institute for Mathematical Sciences (INI)

This workshop focuses on the following themes and their interactions: 1. Geometric and equivariant aspects of algebraic statistics 2. Computation of invariants in algebraic (especially toric) geometry 3. Algebraic group actions on combinatorial spaces

Algèbre,    Géométrie et topologie

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

Mathematical Sciences Research Institute (MSRI)

This workshop brings together experts from different areas to discuss and foster collaboration on several topics of current interest related to Artin groups such as the K(π, 1) conjecture, hyperplane arrangements and abelian arrangements, combinatorial structures associated with dual Coxeter systems, and complexes of nonpositive curvature.

Théorie des groupes,    Géométrie et topologie

Mathematical Sciences Research Institute (MSRI)

This workshop will have a view to the future of a broad spectrum of topics including structure and classification of finite dimensional Lie algebras and superalgebras in characteristic p structure of infinite dimensional Lie algebras and their representations deformation theory of algebras, double constructions and elemental Lie algebras diagram algebras and combinatorial representation theory algebraic combinatorics of groups of Lie type:characters, Schur-Weyl duality, Bratteli diagrams, and McKay correspondences quantum groups and crystal bases, particularly for superalgebras and affine algebras examples of fusion categories arising from representations of Drinfeld doubles and other algebras cohomology for finite tensor categories with applications to its underlying geometry

This meeting will feature principal contributors in these areas in a celebration of the work of Georgia Benkart. With the same focus and tenacity that Georgia always had, we will strive to provide a conference full of beautiful mathematics, incredible inspiration, and the warmth of Georgia’s welcoming personality to our field and our community.

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