Browsing by MSC "55"
Now showing items 41-60 of 77
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2405b - Mini-Workshop: Bridging Number Theory and Nichols Algebras via Deformations
[OWR-2024-5] (2024) - (28 Jan - 02 Feb 2024)Nichols algebras are graded Hopf algebra objects in braided tensor categories. They appeared first in a paper by Nichols in 1978 in the search for new examples of Hopf algebras. Rediscovered later several times, they ... -
0908a - Mini-Workshop: Category Theory and Related Fields: History and Prospects
[OWR-2009-8] (2009) - (15 Feb - 21 Feb 2009)The workshop concerned various topics in the history of category theory and related fields, paying attention to some extent also to open questions, present and possible future development. -
1810a - Mini-Workshop: Chromatic Phenomena and Duality in Homotopy Theory and Representation Theory
[OWR-2018-9] (2018) - (04 Mar - 10 Mar 2018)This mini-workshop focused on chromatic phenomena and duality as unifying themes in algebra, geometry, and topology. The overarching goal was to establish a fruitful exchange of ideas between experts from various areas, ... -
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 ... -
1644c - Mini-Workshop: Computations in the Cohomology of Arithmetic Groups
[OWR-2016-52] (2016) - (30 Oct - 05 Nov 2016)Explicit calculations play an important role in the theoretical development of the cohomology of groups and its applications. It is becoming more common for such calculations to be derived with the aid of a computer. This ... -
2348c - Mini-Workshop: Flavors of Rabinowitz Floer and Tate Homology
[OWR-2023-56] (2023) - (26 Nov - 01 Dec 2023)Rabinowitz Floer homology originated 15 years ago in symplectic geometry. Recent developments have related it to algebraic topology via string toplogy and Tate homology, and to mirror symmetry via Fukaya categories. This ... -
0533c - Mini-Workshop: Gerbes, Twisted K-Theory and Conformal Field Theory
[OWR-2005-38] (2005) - (14 Aug - 20 Aug 2005)The aim of the mini-workshop was to bring together people whose work in mathematics and mathematical physics centers around geometry and topology applicable in modern string theory. More specifically, whose interests are ... -
1743c - Mini-Workshop: Interactions between Low-dimensional Topology and Complex Algebraic Geometry
[OWR-2017-50] (2017) - (22 Oct - 28 Oct 2017)Recent developments exhibit a strong connection between low-dimensional topology and complex algebraic geometry. A common theme is provided by the Alexander polynomial and its many avatars. The mini-Workshop brought together ... -
1320c - Mini-Workshop: Localising and Tilting in Abelian and Triangulated Categories
[OWR-2013-26] (2013) - (12 May - 18 May 2013)The workshop brought together experts on localisation theory and tilting theory from different parts of mathematics with the aim of fully exploiting the power of some recent developments in so far rather independent contexts. ... -
1915a - Mini-Workshop: Recent Progress in Path Integration on Graphs and Manifolds
[OWR-2019-16] (2019) - (07 Apr - 13 Apr 2019)Ever since Richard Feynman's PhD thesis, path integrals have played a decisive role in mathematical physics. While it is well-known that such formulae can hold only formally, it was Mark Kac who realized that by replacing ... -
2510b - Mini-Workshop: Recent Results on Loop Spaces
[OWR-2025-13] (2025) - (02 Mar - 07 Mar 2025)This Oberwolfach mini-workshop gathered mathematicians with an expertise in loop spaces, in order to discuss recent breakthrough results in this field, and the implications of these. A particular focus was given on recent ... -
1109a - Mini-Workshop: The Homotopy Interpretation of Constructive Type Theory
[OWR-2011-11] (2011) - (27 Feb - 05 Mar 2011)Over the past few years it has become apparent that there is a surprising and deep connection between constructive logic and higherdimensional structures in algebraic topology and category theory, in the form of an ... -
1609c - Mini-Workshop: Topological Complexity and Related Topics
[OWR-2016-15] (2016) - (28 Feb - 05 Mar 2016)Topological complexity is a numerical homotopy invariant of topological spaces, of Lusternik-Schnirelmann type, introduced by Farber and motivated by the motion planning problem from topological robotics. This mini-workshop ... -
0733c - Mini-Workshop: Topology of closed one-forms and Cohomology Jumping Loci
[OWR-2007-40] (2007) - (12 Aug - 18 Aug 2007)The purpose of this workshop was to bring together researchers from the two different fields mentioned in the title, and to create more interaction and connections between these fields. Among the topics which appear in ... -
0618b - Mini-Workshop: Zeta Functions, Index and Twisted K-Theory; Interactions with Physics
[OWR-2006-21] (2006) - (30 Apr - 06 May 2006)The meeting provided an opportunity for number theorists, physicists, topologists and analysts to discuss recent developments and interactions in the area of multiple zeta functions, twisted K-theory, Hopf algebras, and ... -
New representations of matroids and generalizations
[OWP-2011-18] (Mathematisches Forschungsinstitut Oberwolfach, 2011)We extend the notion of matroid representations by matrices over fields by considering new representations of matroids by matrices over finite semirings, more precisely over the boolean and the superboolean semirings. This ... -
On Vietoris-Rips Complexes of Ellipses
[OWP-2017-11] (Mathematisches Forschungsinstitut Oberwolfach, 2017-04-25)For $X$ a metric space and $r > 0$ a scale parameter, the Vietoris–Rips complex $VR_<(X; r)$ (resp. $VR_≤(X; r)$) has $X$ as its vertex set, and a finite subset $\sigma \subseteq X$ as a simplex whenever the diameter of ... -
Realizing Spaces as Classifying Spaces
[OWP-2015-01] (Mathematisches Forschungsinstitut Oberwolfach, 2015-04-10)Which spaces occur as a classifying space for fibrations with a given fibre? We address this question in the context of rational homotopy theory. We construct an infinite family of finite complexes realized (up to rational ... -
The Simplicial Complex of Brauer Pairs of a Finite Reductive Group
[OWP-2023-12] (Mathematisches Forschungsinstitut Oberwolfach, 2023-07-17)In this paper we study the simplicial complex induced by the poset of Brauer pairs ordered by inclusion for the family of finite reductive groups. In the defining characteristic case the homotopy type of this simplicial ... -
2309a - Skew Braces and the Yang-Baxter Equation
[OWR-2023-9] (2023) - (26 Feb - 04 Mar 2023)The workshop was focused on the interplay between set-theoretic solutions to the Yang-Baxter equation and several algebraic structures used to construct and understand new solutions. In this vein, the YBE and properties ...