Now showing items 41-60 of 89

• #### 1334 - Group Theory, Measure, and Asymptotic Invariants ﻿

[OWR-2013-42] (2013) - (18 Aug - 24 Aug 2013)
The workshop ‘Group Theory, Measure, and Asymptotic Invariants’ organized by Miklos Abert (Budapest), Damien Gaboriau (Lyon) and Andreas Thom (Leipzig) was held 18 - 24 August 2013. The event was a continuation of the ...
• #### 0817 - Groups and Geometries ﻿

[OWR-2008-20] (2008) - (20 Apr - 26 Apr 2008)
• #### 2040a - Lefschetz Properties in Algebra, Geometry and Combinatorics (hybrid meeting) ﻿

[OWR-2020-31] (2020) - (27 Sep - 03 Oct 2020)
The themes of the workshop are the Weak Lefschetz Property - WLP - and the Strong Lefschetz Property - SLP. The name of these properties, referring to Artinian algebras, is motivated by the Lefschetz theory for projective ...
• #### Matchings and Squarefree Powers of Edge Ideals ﻿

[OWP-2019-25] (Mathematisches Forschungsinstitut Oberwolfach, 2019-11-11)
Squarefree powers of edge ideals are intimately related to matchings of the underlying graph. In this paper we give bounds for the regularity of squarefree powers of edge ideals, and we consider the question of when such ...
• #### 1635 - Measured Group Theory ﻿

[OWR-2016-41] (2016) - (28 Aug - 03 Sep 2016)
The workshop aimed to study discrete and Lie groups and their actions using measure theoretic methods and their asymptotic invariants, such as $\ell^2$-invariants, the rank gradient, cost, torsion growth, entropy-type ...
• #### 1840c - Mini-Workshop: Algebraic, Geometric, and Combinatorial Methods in Frame Theory ﻿

[OWR-2018-46] (2018) - (30 Sep - 06 Oct 2018)
Frames are collections of vectors in a Hilbert space which have reconstruction properties similar to orthonormal bases and applications in areas such as signal and image processing, quantum information theory, quantization, ...
• #### 1440a - Mini-Workshop: Asymptotic Statistics on Stratified Spaces ﻿

[OWR-2014-44] (2014) - (28 Sep - 04 Oct 2014)
Statistical analysis of non-Euclidean data such as data on manifolds is an active and established topic of research, for instance, in the statistical analysis of shape. However, many types of data naturally reside in metric ...
• #### 1706a - Mini-Workshop: Cluster Expansions: From Combinatorics to Analysis through Probability ﻿

[OWR-2017-8] (2017) - (05 Feb - 11 Feb 2017)
The workshop addressed the interplay between theory and applications of cluster expansions. These expansions, historically geared towards the study of systems in statistical mechanics, thermodynamics, and physical chemistry, ...
• #### 1240c - Mini-Workshop: Cohomology Rings and Fundamental Groups of Hyperplane Arrangements, Wonderful Compactifications, and Real Toric Varieties ﻿

[OWR-2012-49] (2012) - (01 Oct - 06 Oct 2012)
The purpose of this workshop was to bring together researchers with a common interest in the objects mentioned in the title from, respectively, the points of view of toric and tropical geometry, arrangement theory, and ...
• #### 1941b - Mini-Workshop: Degeneration Techniques in Representation Theory ﻿

[OWR-2019-46] (2019) - (06 Oct - 12 Oct 2019)
Modern Representation Theory has numerous applications in many mathematical areas such as algebraic geometry, combinatorics, convex geometry, mathematical physics, probability. Many of the object and problems of interest ...
• #### 1507b - Mini-Workshop: Discrete p-Laplacians: Spectral Theory and Variational Methods in Mathematics and Computer Science ﻿

[OWR-2015-7] (2015) - (08 Feb - 14 Feb 2015)
The p-Laplacian operators have a rich analytical theory and in the last few years they have also offered efficient tools to tackle several tasks in machine learning. During the workshop mathematicians and theoretical ...
• #### 1034c - Mini-Workshop: Exploiting Symmetry in Optimization ﻿

[OWR-2010-38] (2010) - (22 Aug - 28 Aug 2010)
The feasible regions of mathematical optimization models quite often exhibit a high degree of symmetry. In recent years, several groups of researchers have independently worked on algorithmic approaches to exploit such ...
• #### 1545a - Mini-Workshop: Friezes ﻿

[OWR-2015-48] (2015) - (01 Nov - 07 Nov 2015)
Frieze patterns were introduced in the early 1970s by Coxeter. They are infinite arrays of numbers in which every four neighbouring entries always satisfy the same arithmetic relation. Amazingly, friezes appear in many ...
• #### 1215b - Mini-Workshop: Hypergraph Turan Problem ﻿

[OWR-2012-19] (2012) - (08 Apr - 14 Apr 2012)
This mini-workshop focused on the hypergraph Turán problem. The interest in this difficult and old area was recently re-invigorated by many important developments such as the hypergraph regularity lemmas, flag algebras, ...
• #### 2009a - Mini-Workshop: Kronecker, Plethysm, and Sylow Branching Coefficients and their Applications to Complexity Theory ﻿

[OWR-2020-9] (2020) - (23 Feb - 29 Feb 2020)
The Kronecker, plethysm and Sylow branching coefficients describe the decomposition of representations of symmetric groups obtained by tensor products and induction. Understanding these decompositions has been hailed ...
• #### 0648b - Mini-Workshop: Logic, Combinatorics and Independence Results ﻿

[OWR-2006-52] (2006) - (26 Nov - 02 Dec 2006)
This is a collection of extended abstracts of a mini-workshop “Logic, Combinatorics and Independence results” that took place on November 25 – December 2, 2006 in Oberwolfach. The mini-workshop was attended by 16 researchers ...
• #### 1117a - Mini-Workshop: Modular Representations of Symmetric Groups and Related Objects ﻿

[OWR-2011-21] (2011) - (24 Apr - 30 Apr 2011)
The mini-workshop focussed on the modular representation theory of the symmetric group and other closely related objects, including Hecke algebras and Schur algebras. The topics and problems discussed include computations ...
• #### 1134b - Mini-Workshop: New Developments in Newton-Okounov Bodies ﻿

[OWR-2011-41] (2011) - (21 Aug - 27 Aug 2011)
The theory of Newton-Okounkov bodies, also called Okounkov bodies, is a new connection between algebraic geometry and convex geometry. It generalizes the well-known and extremely rich correspondence between geometry of ...
• #### 0910c - Mini-Workshop: Non-Negativity is a Quantum Phenomenon ﻿

[OWR-2009-14] (2009) - (01 Mar - 07 Mar 2009)
In recent publications, the same combinatorial description has arisen for three separate objects of interest: non-negative cells in the real grassmannian (Postnikov, Williams); torus orbits of symplectic leaves in the ...
• #### 2106c - Mini-Workshop: Nonpositively Curved Complexes (online meeting) ﻿

[OWR-2021-8] (2021) - (07 Feb - 13 Feb 2021)
The leading theme of the meeting was to understand nonpositively curved complexes and groups acting on them. Motivations, questions, results, and techniques being presented and discussed come from various areas of ...