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1
QUEUE2 — QUantum and molEcUlEs
06. Feb 2023 - 10. Feb 2023 • Gdańsk, Polen
Veranstalter:
Gdańsk University of Technology, Faculty of Applied Physics and Mathematics
Zusammenfassung:
QUEUE II is perfect for all young scientists and students who wish to learn the basics and the advances in quantum ideas and methodologies, along with their practical applications in chemistry, electrochemistry, and material sciences. Tutorials will be followed by laboratory classes, during which students will learn how to perform quantum-chemical computations. They will have a chance to solve nontrivial computational problems from scratch using a supercomputer and quantum software. In addition, they will learn the multiconfigurational methods - getting the next level of skills in quantum-chemical computations. During laboratory classes, students will visualize molecular structures and the orbitals - the outcome of their computations. QUEUE II will be run in a hybrid mode (in-person and online). Participation in this intensive program is free of charge. Fifteen non-Polish students will be awarded a fellowship to partially reimburse the costs of the travel and living in Gdańsk. All Participants will receive a diploma certifying acquired skills and learning outcomes, as well as, ECTS credits collected during the training.
Kontakt:
chairman;     Tel.: [+48 58 3471235];     Email: maciej.bobrowski@pg.edu.pl
Themen:
Quantum chemistry, quantum theory, molecular modeling, supercomputer, electrochemistry, chemistry, chemical reactions, reactivity, electronic configuration,
Eintrags-ID:
1526096
2
New Mathematics for the Exascale: Applications to Materials Science
13. Mär 2023 - 16. Jun 2023 • Institute for Pure and Applied Mathematics (IPAM), Los Angeles, Vereinigte Staaten
Zusammenfassung:
The aim of this program is to foster the development of new mathematical tools and formalisms that will enable a new generation of ultra-scalable algorithms for a broad range of applications in computational materials science. Topics of interest will include strategies for scalable single-scale simulations, novel massively-parallel scale-bridging algorithms, and integration of extreme-scale computing into experimental and data science workflows. The program will bring together applied mathematicians, materials scientists, computer scientists, and method developers interested in unlocking the potential of upcoming exascale architectures through novel mathematical approaches.
Eintrags-ID:
1435927
3
Workshop — New Mathematics for the Exascale: Applications to Materials Science Tutorials
14. Mär 2023 - 17. Mär 2023 • Los Angeles, CA, Vereinigte Staaten
Veranstalter:
Institute for Pure and Applied Mathematics (IPAM), UCLA
Eintrags-ID:
1501717
4
AGSFS2023 — Asia Green Smart Foundry Summit 2023
16. Mär 2023 - 17. Mär 2023 • Shanghai, China
Veranstalter:
Broaders
Zusammenfassung:
Build Energy Efficient Digitalised,LE,Climate Friendly Foundry
Kontakt:
Tel.: [86-21-62375611];     Email: marketing@broadersinc.com
Themen:
Key Features Gain latest information on energy efficiency and emission policies across the Asian countries Understand the economics of green smart foundry in the region Learn what investors need to make a project bankable Debate challenge and opportunities with investors, funders and advisors Assessing how green smart foundry markets are developing in the region Assess new technologies in green smart foundry indutry Assess the market opportunities for advanced green smart foundry technologies and their outputs Debate the future of the emerging green smart foundry market with industry leaders Benefit from technical expertise insight from some of the industry’s leading technology providers Take part in robust discussions and share best-practice with senior-level opinion-formers Network and do business with the leading green smart foundry projects owners in the region Discover new commercial opportunities in 2023 and beyond Position your company at the forefront of the green smart foundry industry globally and Asia
Eintrags-ID:
1522188
5
Workshop I: Increasing the Length, Time, and Accuracy of Materials Modeling Using Exascale Computing
27. Mär 2023 - 31. Mär 2023 • Los Angeles, CA, Vereinigte Staaten
Veranstalter:
Institute for Pure and Applied Mathematics (IPAM), UCLA
Zusammenfassung:
The vast majority of the computing power available to the materials science community is consumed by a relatively small number of workhorse methods, such as molecular dynamics and density functional theory. These methods have been adapted to run on parallel platforms for decades, but the focus has firmly been on weak-scaling, i.e., on scaling the problem size with the number of processors. While high-performance weak-scaling implementations of these methods are extremely valuable, the focus on increasing length-scales limits opportunities for scientific discovery. Transformative impact requires the capability to leverage computing resources to simultaneously and flexibly increase length scales, time scales, and accuracy. Increasing simulation timescales requires a deep understanding of the mathematics of rare in order to inform novel methods that are specially tailored from the start, as well as strong-scaling computational engines that can leverage large computational resources on problems of relatively small sizes. This requires a dramatic rethinking of how basic algorithms in materials science are derived and implemented. Similarly, the exponential increase in computer resources now enables very high accuracy simulations with methods such as coupled clusters or quantum Monte Carlo. These methods are extremely powerful, but they tend to scale poorly with the number of electrons. The development of new flexible methods where accuracy can be systematically adjusted in order to modify the tradeoff between size and time scales would therefore be extremely beneficial. This workshop will focus on recent development of new mathematical approaches to intensive calculations at massive scale with a focus on new ways to improve scalability (both weak and strong) and extend simulations along the size, time, and accuracy axes simultaneously.
Themen:
Part of the Long Program New Mathematics for the Exascale: Applications to Materials Science, Integration of direct simulations, online data analysis, and experimental data. Mathematical methods for data assimilation. Large-scale inverse problems. Computation-aided online experimental design at massive scales. Active exploration of chemical space using massive quantum calculations. Workflow infrastructure. Integration of numerically-intensive calculations with ML/data-science at scale.
Eintrags-ID:
1501716
6
Mascot-Num 2023 Conference
03. Apr 2023 - 06. Apr 2023 • Le Croisic, Frankreich
Veranstalter:
The 2023 annual meeting of the French CNRS research network MASCOT-NUM will be held in Le Croisic from April 3 to April 6, and will be organized by the Groupement d'Intérêt Scientifique UQ@Paris-Saclay.
Zusammenfassung:
The event is dedicated to the 60th birthday of Fabrice Gamboa, with a series of presentation centered around Fabrice's favorite research topics. The first full day of the conference (April 4) will be mainly devoted, as is tradition, to presentations and posters made by doctoral students. The next two days (April 5–6) will be dedicated to research talks given by invited speakers, and a two-part lecture (2 x 1h15) given by Pierre Chainais.

GdR MASCOT-NUM is a French Research Group dealing with stochastic methods for the analysis of numerical codes.

Eintrags-ID:
1525609
Verwandte Fachgebiete:
7
Lecture — Digital rock under stress
04. Apr 2023 • virtual, Virtuelle Veranstaltung
Veranstalter:
Society of Exploration Geophysicists (SEG)
Zusammenfassung:
Modelling physical properties of rocks based on microstructure derived from X-ray microtomographic images (known as digital rock physics) is an important technology in geophysical rock characterization. However, these images are most commonly obtained at room pressure and temperature conditions. Consequently, most digital rock physics models are not representative of the rocks at depth. Reservoir rocks are at such depth that they experience high stresses and temperatures. The thermodynamic properties of the fluids inside the reservoir are pressure and temperature dependent, therefore transport properties are also temperature and pressure dependent. Moreover, it is well established that elastic rock properties of rocks are strongly affected by stress and/or fluid distribution. Thus, in order to acquire realistic pore network structures and fluid distributions (including, but not limited to, residual saturation) and to reliably estimate transport and elastic properties from micro images, rocks with fluids inside have to be imaged at reservoir pressure and temperature conditions. In this lecture, we will discuss the ways how to obtain 3D images under elevated temperature and stress conditions, as well the challenges with the imaging and further image processing. Finally, we will provide some results to demonstrate how microstructure of the rocks can be link to transport and elastic properties of rocks measured on bigger samples. The lecture maybe useful to rock physicist, petrophysics, and reservoir engineers.
Eintrags-ID:
1530541
Verwandte Fachgebiete:
8
ICDDPS-4 — 4th International Conference on Data-Driven Plasma Science
16. Apr 2023 - 21. Apr 2023 • Okinawa, Japan
Veranstalter:
Okinawa Institute of Science and Technology (OIST)
Zusammenfassung:
The goal of the Conference is for the participants to discuss the latest research results in data-driven science (such as artificial intelligence, machine learning, image processing, data mining, etc.) applied to plasma science and technologies, including, but not limited to, plasma processing and nuclear fusion. Thanks to the recent advancement of sophisticated diagnostics techniques and first-principle computer simulations, the amount of data that one accumulates in research is increasing exponentially. Plasma scientists should take full advantage of, and may even contribute to, the latest development of data-driven science and find a way to extract essential information efficiently from such data.
Einsendeschluss für Abstracts:
02. Dez 2022
Eintrags-ID:
1508417
Verwandte Fachgebiete:
9
Workshop MWSW03 — Computational methods for multiple scattering
17. Apr 2023 - 21. Apr 2023 • Cambridge , Großbritannien
Veranstalter:
Isaac Newton Institute for Mathematical Sciences (INI)
Zusammenfassung:
The accurate and efficient numerical modelling of waves interacting with complex scattering geometries is crucial for a wide range of engineering and science applications, including electromagnetic/photonic/acoustic/elastodynamic imaging and device/material design. The multiple scattering regime — i.e. wave scattering scenarios in which there are multiple interactions — includes strong scattering by multiple obstacles, periodic structures, media with variable refractive index, waveguides, random media, and non-convex obstacles. This brings special computational challenges since perturbative and one-way approximations do not apply, and ray methods usually suffer from exponential proliferation. Conventional PDE solvers are also inadequate, particularly at high frequencies, and/or when the propagation domain is highly heterogeneous (containing many scatterers, a highly variable refractive index or geometric singularities).

The aim of this workshop is to bring together researchers working on computational methods for multiple scattering and to explore possible connections and common challenges between the different communities involved.

Themen:
- novel discretization techniques based on numerical homogenisation, integral equation methods, finite element methods (including Trefftz methods), and semi-analytic and generalised eigenfunction methods; - acceleration techniques including preconditioning, matrix compression (including H-matrices and the fast multipole method), domain decomposition and fast direct solvers; - robust and efficient software implementations
Eintrags-ID:
1519720
10
Workshop II: Scale-Bridging Materials Modeling at Extreme Computational Scales
17. Apr 2023 - 21. Apr 2023 • Institute for Pure and Applied Mathematics, UCLA, Vereinigte Staaten
Veranstalter:
Institute for Pure and Applied Mathematics, UCLA.
Zusammenfassung:
Quantitatively predicting the properties of “real” structural materials is an extremely challenging endeavor, as macroscale properties depend on characteristics of the material at every scale, from nanometers (short range order, point defects, etc.), to micrometers (grain size, extended defects, etc.), to centimeters (texture, etc.). Similarly, relevant timescales range from atomic vibrations (picoseconds) to microstructural evolution times (hours to years). This extreme breadth of size and time scales makes the accurate simulations with fully-resolved atomic-scale tools (e.g., molecular dynamics) hopeless. Practical solutions must therefore rely on scale-bridging approaches that systematically upscale the lower scale physics into computationally tractable higher-scale constructs. The premise of this workshop is that extreme-scale computing can breathe new life into the field of multiscale modeling by addressing the problems identified above with brute force computing. This workshop will focus on new mathematical approaches to multiscale/multiphysics modeling, with a particular emphasis on the many theoretical and numerical challenges faced at the exascale. The goal is to bring together specialists in a range of massively parallel algorithms and researchers interested in improving the scalability of current techniques.
Themen:
Part of the Long Program New Mathematics for the Exascale: Applications to Materials Science, Integration of direct simulations, online data analysis, and experimental data. Mathematical methods for data assimilation. Large-scale inverse problems. Computation-aided online experimental design at massive scales. Active exploration of chemical space using massive quantum calculations. Workflow infrastructure. Integration of numerically-intensive calculations with ML/data-science at scale.
Eintrags-ID:
1484021
11
CHEP 2023 — 26th International Conference on Computing in High Energy & Nuclear Physics
08. Mai 2023 - 12. Mai 2023 • Norfolk, VA, Vereinigte Staaten
Zusammenfassung:
The CHEP conferences address the computing, networking and software issues for the world’s leading data‐intensive science experiments that currently analyze hundreds of petabytes of data using worldwide computing resources. The Conference provides a unique opportunity for computing experts across Particle and Nuclear Physics to come together to learn from each other and typically attracts over 500 participants. The event features plenary sessions, parallel sessions, and poster presentations; it publishes peer-reviewed proceedings. The focus of the conference evolves with time to highlight changing technologies and major scientific initiatives.
Eintrags-ID:
1522330
12
INMS Workshop — Waves and Free Surface Flows: the next twenty years
15. Mai 2023 - 19. Mai 2023 • ICMS, Edinburgh, Großbritannien
Veranstalter:
ICMS - International Centre for Mathematical Sciences
Zusammenfassung:
Waves on the surface of a fluid, or on the interface between different fluids are ubiquitous phenomena with wide importance in technology, science and the environment. Over the past fifty years the advent of numerical computations have meant that fundamental questions about waves have proven to be fertile ground for numerical approaches, and additionally rigorous theory, numerical and asymptotic methods have intersected to furnish a vibrant interdisciplinary ground for fundamental research.

This workshop will bring together mathematicians and other scientists working on numerical, asymptotic and rigorous aspects on a variety of free surface flows.

Eintrags-ID:
1514044
13
Workshop IV: Co-design for the Exascale and IPAM Hackathon
22. Mai 2023 - 26. Mai 2023 • Los Angeles, CA, Vereinigte Staaten
Veranstalter:
Institute for Pure and Applied Mathematics (IPAM), UCLA
Zusammenfassung:
The final workshop of this program will be an event designed to promote the generation of tangible products from the long program and to explore the best practices in setting up a computational co-design process that ranges from derivation of the key formalisms, to the design of the computational approach, and finally to its implementation. The vision of the program is that the long-term participants will self-organize into working groups designed to identify, analyze, and solve key problems that impede the effective use of extremescale computing in materials science. In order to ensure that these advances make their way into the hands of the community at large, this IPAM “hackathon” will gather code developers, mathematicians, method developers, and computer scientists and engineers from the computer vendors for a week of discussion, hands-on development, and implementation of the new ideas generated during the program. A key objective will be to ensure the transition from “research” codes into “production” codes that can be used and further improved by the community. As such, significant parts of the workshop will involve participants organizing into working groups in order to solve (or take the first steps in solving) practical issues that will have been raised throughout the program. The workshop will include a short series of talks where lead developers of various projects will share their experience and processes when attacking new problems related to evolving architectures, either in terms of new mathematical formalism, increasing computational scales, and architectural details.
Themen:
Part of the Long Program New Mathematics for the Exascale: Applications to Materials Science, Integration of direct simulations, online data analysis, and experimental data. Mathematical methods for data assimilation. Large-scale inverse problems. Computation-aided online experimental design at massive scales. Active exploration of chemical space using massive quantum calculations. Workflow infrastructure. Integration of numerically-intensive calculations with ML/data-science at scale.
Eintrags-ID:
1501737
14
11th EGU Galileo Conference: The Solid Earth and Geohazards in the Exascale Era
23. Mai 2023 - 26. Mai 2023 • Barcelona, Spanien
Veranstalter:
European Geosciences Union (EGU)
Zusammenfassung:
With the birth of geosciences and then of computational geosciences, people's attitude towards the world has changed. People are no longer passive observers but rather more proactive players in their environment and the knowledge gained from computational geosciences has been used to save lives and prepare for future scenarios. Now, with the Exascale computing era dawning upon us, even more accurate, clearer and faster data will be within our reach.
Eintrags-ID:
1514811
15
Differentiable and Probabilistic Programming for Fundamental Physics
05. Jun 2023 - 30. Jun 2023 • München, Deutschland
Veranstalter:
MIAPbP - Munich Institute for Astro-, Particle and BioPhysics
Zusammenfassung:
Domains such as cosmology, astrophysics, nuclear or particle physics rely heavily on the use of stochastic simulation to design data analyses and perform inference with respect to fundamental physics theories. With the advances of Deep Learning, Bayesian inference techniques, a new frontier has come into view that focuses on the extension of traditional scientific programming along the two distinct directions of differentiable programming and probabilistic programming. The former plays an important role in navigating high-dimensional spaces, while the latter can manifestly incorporate generative modeling and inference into scientific data analyses. Both promise to expand the science reach of data-intensive domains through, e.g., the integration of domain knowledge and symmetries into neural networks, algorithmic robustness, alignment of science and training optimization goals, uncertainty quantification, causal inference, and more complete inference. However, most production scientific pipelines are not yet compatible with these techniques and their widespread adoption would represent a deep change in the scientific software landscape. This program will provide the opportunity for researchers from Computer Science and Fundamental Physics to develop applications as well as strategies for integrating these paradigms into existing scientific workflows and to close the gap of what is theoretically possible and practically deployed.
Eintrags-ID:
1507173
16
MCWASP XVI — Modelling of Casting, Welding and Advanced Solidification Processes
18. Jun 2023 - 23. Jun 2023 • Banff, Alberta, Kanada
Zusammenfassung:
Programming will feature all aspects of solidification modelling including solidification process technologies (continuous and semi-continuous casting, shape casting, additive manufacturing, and welding amongst others), coupled multi-physics simulations, defect formation, fluid flow, micro and macro structure formation, numerical methods, as well as related experimentation especially in-situ observation of solidification.
Einsendeschluss für Abstracts:
01. Nov 2022
Eintrags-ID:
1531808
Verwandte Fachgebiete:
17
TOPICAL WORKSHOP 2023 — The Road to Differentiable and Probabilistic Programming in Fundamental Physics
26. Jun 2023 - 28. Jun 2023 • München, Deutschland
Veranstalter:
MIAPbP - Munich Institute for Astro-, Particle and BioPhysics
Zusammenfassung:
We are happy to announce that the Differentiable and Probabilistic Programming for Fundamental Physics program includes a three day workshop. The workshop will contain talks about recent advancements in differentiable programming (DP) and probabilistic programming in the context of Physical Sciences. The workshop's diverse set of invited speakers will cover DP/ProbProg users and experts, toolmakers and authors of promising technologies. The workshop aims to explore the potential science impact of DP/ProbProg and to understand the steps towards, and challenges of, a successful implementation of these paradigms in fundamental physics.
Eintrags-ID:
1507161
18
Digital rock under stress
27. Jun 2023 • virtual, Virtuelle Veranstaltung
Zusammenfassung:
Modelling physical properties of rocks based on microstructure derived from X-ray microtomographic images (known as digital rock physics) is an important technology in geophysical rock characterization. However, these images are most commonly obtained at room pressure and temperature conditions. Consequently, most digital rock physics models are not representative of the rocks at depth.

In this lecture, we will discuss the ways how to obtain 3D images under elevated temperature and stress conditions, as well the challenges with the imaging and further image processing. Finally, we will provide some results to demonstrate how microstructure of the rocks can be link to transport and elastic properties of rocks measured on bigger samples.

Eintrags-ID:
1530471
Verwandte Fachgebiete:
19
NEMO 2023 — 2023 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization
28. Jun 2023 - 30. Jun 2023 • Winnipeg, Kanada
Veranstalter:
IEEE Microwave Theory & Techology Society (MTT-S)
Zusammenfassung:
NEMO'2023 will bring together experts and practitioners of electromagnetic and multiphysics-based modeling, simulation and optimization for RF, microwave and terahertz applications. This conference is an ideal forum to share new ideas on techniques for electromagnetic and multiphysics modeling, propose efficient design algorithms and tools, and anticipate the modeling/analysis needs of future technologies and applications.
Einsendeschluss für Abstracts:
15. Feb 2023
Eintrags-ID:
1523776
20
BIRS Workshop — Applied and Computational Differential Geometry and Geometric PDEs
30. Jul 2023 - 04. Aug 2023 • Banff, Alberta, Kanada
Veranstalter:
Banff International Research Station (BIRS) for Mathematical Innovation and Discovery
Zusammenfassung:
This workshop will bring together mathematicians with expertise spanning the theoretical, numerical, discrete and computational geometry and partial differential equations (PDEs) and computer scientists with related interests to identify and discuss some of the most promising areas for advances in the understanding and application in geometric data analysis.
Eintrags-ID:
1499165
21
CCP2023 — 34th IUPAP Conference on Computational Physics
04. Aug 2023 - 08. Aug 2023 • Kobe Port Island, Kobe, Japan
Veranstalter:
International Union of Pure and Applied Physics (IUPAP)
Zusammenfassung:
CCP2023 is the 34th in a series of meetings of scientists working in the domain of Computational Physics. The Conference on Computational Physics (CCP) is held every year under the auspices of the C20 Commission for Computational Physics of the International Union of Pure and Applied Physics (IUPAP). The conference includes a broad range of computational scientists with common interests in communicating and engaging with their computation-oriented colleagues to exchange information and develop future collaborations. We plan to hold CCP2023 in a hybrid way, namely, on-site and on-line (using an Internet conference system).
Eintrags-ID:
1531359
22
Workshop — Partial Differential Equations in Fluid Dynamics
06. Aug 2023 - 11. Aug 2023 • Hangzhou, China
Veranstalter:
Institute for Advanced Study in Mathematics (IASM) in Hangzhou, China
Zusammenfassung:
This is a 5-day workshop with about 42 participants. It will focus on the study of the theoretical partial differential equations and application in fluid dynamics, emphasizing the study on the structure of solutions and their large-time behavior to Navier-Stokes equations, Euler equations, Boltzmann equations, and so on. The conference will serve as a platform to report new breakthroughs, exchange research ideas, extend academic networks, and promote diversity and inclusion in this research field. New collaborations are also expected during and after the meeting. Topnotch speakers and talks will be carefully selected to make the conference attractive to a diverse audience.
Eintrags-ID:
1523390
23
M&C 2023 — International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering
13. Aug 2023 - 17. Aug 2023 • Niagara Falls, Ontario, Kanada
Veranstalter:
Mathematics and Computation Division of the American Nuclear Society
Zusammenfassung:
The International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2023) is a part of a series of topical meetings organised by the Mathematics and Computation Division of the American Nuclear Society. The M&C conferences, held every two years, represent a series of international forums organised and sponsored to bring together worldwide expertise related to nuclear science or technology including mathematical and computational methods, numerical analysis, computer codes, computer architectures, and benchmarks for computationally solving problems in all disciplines encompassed by the Society.
Eintrags-ID:
1500946
Verwandte Fachgebiete:
24
NURETH-20 — 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics
20. Aug 2023 - 25. Aug 2023 • Washington, D.C., Vereinigte Staaten
Veranstalter:
American Nuclear Society (ANS)
Einsendeschluss für Abstracts:
01. Okt 2022
Eintrags-ID:
1501058
25
Classical and Quantum Mechanical Models of Many-Particle Systems
03. Sep 2023 - 09. Sep 2023 • Oberwolfach, Deutschland
Veranstalter:
Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)
Eintrags-ID:
1495259
Verwandte Fachgebiete:
26
BIRS Workshop — Mechanics of Cells and Polymer Networks: Bridging Theory, Simulation and Experiment
10. Sep 2023 - 15. Sep 2023 • Banff, Alberta, Kanada
Veranstalter:
Banff International Research Station (BIRS) for Mathematical Innovation and Discovery
Zusammenfassung:
The interface between biology and quantitative disciplines including physics, mathematics and engineering is rapidly expanding. This is the result of many factors, but is largely driven by higher resolution spatial and temporal data from cutting edge imaging techniques, and increasing success in applying physical modeling techniques to biological problems. Mechanobiology is an especially rapidly developing field at the quantitative biology interface. This field describes how force is generated in biological systems, how force impacts chemistry, and how force generation is controlled by intracellular signaling pathways. Numerous feedforward and feedback interactions connect forces in cells to the dynamics of proteins and gene expression, resulting in highly nonlinear systems with complex and often non-intuitive behaviours.
Eintrags-ID:
1499192
27
Renormalization, computation and Vizualization
11. Sep 2023 - 15. Nov 2023 • CIRM (Marseille Luminy), Frankreich
Veranstalter:
CIRM – Centre International de Rencontres Mathématiques
Eintrags-ID:
1532404
28
BIRS Workshop — Approximation Algorithms and the Hardness of Approximation
17. Sep 2023 - 22. Sep 2023 • Banff, Alberta, Kanada
Veranstalter:
Banff International Research Station (BIRS) for Mathematical Innovation and Discovery
Zusammenfassung:
Most of the many discrete optimization problems arising in the sciences, engineering, and mathematics are NP-hard, that is, there exist no efficient algorithms to solve them to optimality, assuming the conjecture that P does not equal NP. The area of approximation algorithms focuses on the design and analysis of efficient algorithms that find solutions that are within a guaranteed factor of the optimal one. Loosely speaking, in the context of studying algorithmic problems, an approximation guarantee captures the quality of an algorithm -- for every possible set of input data for the problem, the algorithm finds a solution whose cost is within this factor of the optimal cost. A hardness threshold indicates the difficulty of the algorithmic problem -- no efficient algorithm can achieve an approximation guarantee better than the hardness threshold assuming that P does not equal NP. Over the last two decades, there have been major advances on the design and analysis of approximation algorithms, and on the complementary topic of the hardness of approximation. The goal of the workshop is to focus on a few key topics that could lead to deep new results in the areas of approximation algorithms, combinatorial optimization, hardness of approximation, and proof complexity.
Eintrags-ID:
1499235
29
Workshop — Recursion Theory and its Applications
15. Okt 2023 - 20. Okt 2023 • Hangzhou, China
Veranstalter:
Institute for Advanced Study in Mathematics (IASM) in Hangzhou, China
Zusammenfassung:
Recursion theory measures the complexity of mathematical objects in terms of what is computable, in other words, what can be determined by a computer with no space or time limitations. We can define, for example, computable sets of natural numbers, computable (continuous) functions on the real numbers, or computably enumerable open subsets of the reals. Adding an oracle---an outside source of information---allows us to extend the reach of recursion theory beyond the computable. For example, every continuous function on the real numbers is a computable function relative to some oracle. For another example, a set of real numbers has Hausdorff dimension zero if and only if there is an oracle relative to which every real in the set can be significantly compressed. In this way, recursion theory offers a fine-grained way to analyze some of the most central notions in mathematics. This has recently led to deep applications to analysis, number theory, and set theory. The focus of this workshop is on understanding and extending these applications of recursion theory.
Eintrags-ID:
1523361
Verwandte Fachgebiete:
30
Symmetry, Stability, and interactions with Computation
13. Nov 2023 - 17. Nov 2023 • CIRM (Marseille Luminy), Frankreich
Veranstalter:
CIRM – Centre International de Rencontres Mathématiques
Eintrags-ID:
1503219
31
Nonlinear Optics: Physics, Analysis, and Numerics
10. Mär 2024 - 15. Mär 2024 • Oberwolfach, Deutschland
Veranstalter:
Mathematisches Forschungsinstitut Oberwolfach (MFO, Oberwolfach Research Institute for Mathematics)
Eintrags-ID:
1529552
Verwandte Fachgebiete:


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