Conférences - Théorie des graphes et combinatoire - États-Unis

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1
Combinatorial Algebraic Geometry
01 fév 2021 - 07 mai 2021 • Providence, RI, États-Unis
Organisateur:
ICERM
Résumé:
Research in combinatorial algebraic geometry utilizes combinatorial techniques to answer questions about geometry. Typical examples include predictions about singularities, construction of degenerations, and computation of geometric invariants such as Gromov-Witten invariants, Euler characteristics, the number of points in intersections, multiplicities, genera, and many more. The study of positivity properties of geometric invariants is one of the driving forces behind the interplay between geometry and combinatorics. Flag manifolds and Schubert calculus are particularly rich sources of invariants with positivity properties.
Contact:
Tél.: [4018635030];     Email.: info@icerm.brown.edu
Identifiant de l'évènement:
1370937
Sujets apparentés:
2
Sage/Oscar Days for Combinatorial Algebraic Geometry
15 fév 2021 - 19 fév 2021 • Providence, RI, États-Unis
Organisateur:
ICERM
Résumé:
This workshop will focus on the development of software to facilitate research in combinatorial algebraic geometry, based on the SAGE Mathematical Software System and the OSCAR Computer Algebra System. Special attention will be given to efficient computations with multi-variate polynomials, which is a critical part of many algorithms in combinatorial algebraic geometry. Aside from development of software, the workshop will feature a series of talks about polynomial computations, as well as introductory lectures about Sage and Oscar.
Contact:
Email.: info@icerm.brown.edu
Identifiant de l'évènement:
1360610
Sujets apparentés:
3
REACT — Research Encounters in Algebraic and Combinatorial Topics
15 fév 2021 - 05 mar 2021 • Online, États-Unis
Résumé:
REACT (Research Encounters in Algebraic and Combinatorial Topics) is an online workshop for graduate students that will take place February 15 - March 5, 2021 on Zoom. The goals of this workshop are: 1) To bring students together and help them build a professional network despite the limitations of the COVID-19 pandemic, and 2) To provide a collaborative research experience for students via accessible open problems in combinatorics and algebra. The first week (February 15-19) will consist of three courses, where speakers will introduce open problems in their fields. The courses are: 1) Matthias Beck (SFSU/FU Berlin), "Classifying combinatorial polynomials" 2) Martina Juhnke-Kubitzke (Universität Osnabrück) and Uwe Nagel (Kentucky), "Symmetries in algebra and combinatorics in finite and infinite settings" 3) Mateusz Michałek (Universität Konstanz), "Applications of enumerative algebraic geometry: complete quadrics in statistics." During the second and third weeks, students will work on the problems in small groups. There will also be online social activities. Please see the REACT website https://sites.google.com/view/react-2021 for course abstracts and more details.
Sujets:
combinatorics, commutative algebra, algebraic statistics, algebraic geometry, online, graduate students, workshop
Identifiant de l'évènement:
1386795
Sujets apparentés:
4
Deep Learning and Combinatorial Optimization
22 fév 2021 - 26 fév 2021 • Los Angeles, CA, États-Unis
Organisateur:
Institute of Pure and Applied Mathematics (IPAM), UCLA
Résumé:
In recent years, deep learning has significantly improved the fields of computer vision, natural language processing and speech recognition. Beyond these traditional fields, deep learning has been expended to quantum chemistry, physics, neuroscience, and more recently to combinatorial optimization (CO). Well-known CO problems are Travelling Salesman Problem, assignment problems, routing, planning, Bayesian search, and scheduling. CO is basically used every day in finance and revenue management, transportation, manufacturing, supply chain, public policy, hardware design, computing and information technology. The workshop will bring together experts in mathematics (optimization, graph theory, sparsity, combinatorics, statistics), CO (assignment problems, routing, planning, Bayesian search, scheduling), machine learning (deep learning, supervised, self-supervised and reinforcement learning) and specific applicative domains (e.g. finance, transportation, hardware design, computing and information technology) to establish the current state of these emerging techniques and discuss the next directions. Besides, such generalization of deep learning techniques to CO problems will also push forward the mathematical analysis of the properties of these learning systems like generalization and transfer, stochastic optimization and dynamic predictivity that make the success of these techniques.
Identifiant de l'évènement:
1375366
5
Geometry and Combinatorics from Root Systems
22 mar 2021 - 26 mar 2021 • Providence, RI, États-Unis
Organisateur:
ICERM
Résumé:
The purpose of the workshop is to bring together a diverse group of researchers working on combinatorial and geometric aspects related to spaces with symmetries. The workshop will cover problems arising from various flavors of Schubert Calculus and enumerative geometry on flag manifolds, and problems from geometric representation theory and combinatorial Hodge theory. The topics covered include the study of Littlewood-Richardson coefficients, quantum cohomology and quantum K theory of flag manifolds, Maulik-Okounkov stable envelopes and characteristic classes, conformal blocks, and combinatorics related to moduli spaces, Macdonald theory, and quiver polynomials, Soergel bimodules, Hodge theory of matroids. These are trends in a rapidly developing area, and our aim is to facilitate interactions among researchers who work on different problems but employ similar techniques, at the intersection of algebraic geometry, combinatorics, and representation theory.
Contact:
Email.: info@icerm.brown.edu
Identifiant de l'évènement:
1360664
Sujets apparentés:
6
AIM Workshop: Analytic combinatorics in several variables
17 mai 2021 - 21 mai 2021 • San Jose, États-Unis
Organisateur:
American Institute of Mathematics, San Jose
Résumé:
This workshop, sponsored by AIM and the NSF, will be devoted to bringing researchers with expertise in asymptotic integrals, computer algebra and topology of complex varieties into contact with those working on analytic combinatorics in several variables (ACSV), in order to make progress on the technical infrastructure of ACSV results.
Identifiant de l'évènement:
1366855
7
IPCO XXII — Conference on Integer Programming and Combinatorial Optimization
19 mai 2021 - 21 mai 2021 • Atlanta, Georgia, États-Unis
Organisateur:
H. Milton Stewart School of Industrial and Systems Engineering
Résumé:
The IPCO conference is under the auspices of the Mathematical Optimization Society and is held every year. The conference is a forum for researchers and practitioners working on various aspects of integer programming and combinatorial optimization. The aim is to present recent developments in theory, computation, and applications in these areas.
Identifiant de l'évènement:
1386938
Sujets apparentés:


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Dernière mise à jour: 16 Novembre 2020