Browsing by MSC "19"
Now showing items 2140 of 47

1504  Geometric Topology
[OWR20153] (2015)  (18 Jan  24 Jan 2015)Geometric topology has seen significant advances in the understanding and application of infinite symmetries and of the principles behind them. On the one hand, for advances in (geometric) group theory, tools from algebraic ... 
0524  Geometric Topology and Connections with Quantum Field Theory
[OWR200527] (2005)  (12 Jun  18 Jun 2005)In recent years, the interplay between traditional geometric topology and theoretical physics, in particular quantum field theory, has played a significant role in the work of many researchers. The idea of this workshop ... 
Ghost Algebras of Double Burnside Algebras via Schur Functors
[OWP201209] (Mathematisches Forschungsinstitut Oberwolfach, 20120703)For a finite group $G$, we introduce a multiplication on the $\mathbb{Q}$vector space with basis $\mathscr{S}_{G\times G}$, the set of subgroups of ${G \times G}$. The resulting $\mathbb{Q}$algebra $\tilde{A}$ can be ... 
Homology and $K$Theory of TorsionFree Ample Groupoids and Smale Spaces
[OWP202020] (Mathematisches Forschungsinstitut Oberwolfach, 20201009)Given an ample groupoid, we construct a spectral sequence with groupoid homology with integer coefficients on the second sheet, converging to the $K$groups of the groupoid C*algebra when the groupoid has torsionfree ... 
0922  Manifold Perspectives
[OWR200927] (2009)  (24 May  30 May 2009)The study of the global properties of manifolds and their symmetries has had a great impact on both geometric and algebraic topology, and also on other branches of mathematics, such as algebra, diﬀerential geometry and ... 
1409c  MiniWorkshop: BatalinVilkovisky Algebras, Operads, and Hopf Algebroids
[OWR201411] (2014)  (23 Feb  01 Mar 2014)This workshop brought together 17 researchers whose work involves Batalin–Vilkovisky algebras, operads, and related structures such as Gerstenhaber algebras and cyclic homology. It featured introductory lectures on some ... 
0908a  MiniWorkshop: Category Theory and Related Fields: History and Prospects
[OWR20098] (2009)  (15 Feb  21 Feb 2009)he 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. 
1644c  MiniWorkshop: Computations in the Cohomology of Arithmetic Groups
[OWR201652] (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 ... 
0533c  MiniWorkshop: Gerbes, Twisted KTheory and Conformal Field Theory
[OWR200538] (2005)  (14 Aug  20 Aug 2005)The aim of the miniworkshop 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 ... 
1606a  MiniWorkshop: Operator Spaces and Noncommutative Geometry in Interaction
[OWR20166] (2016)  (07 Feb  13 Feb 2016)In recent years, operator space theory has made remarkable appearances in noncommutative geometry, notably in the study of $C^*$algebras of real reductive groups and the unbounded picture of Kasparov theory. In both these ... 
1020  Motives and Homotopy Theory of Schemes
[OWR201023] (2010)  (16 May  22 May 2010)The 2010 program on Motives and Homotopy Theory of Schemes consisted of a lively and varied series of 19 onehour lectures on the latest developments in the field, presenting a wide range of aspects of this multifaceted ... 
1120b  New Directions in Algebraic KTheory
[OWR201127] (2011)  (15 May  21 May 2011)This meeting brought together algebraic geometers, algebraic topologists and geometric topologists, all of whom use algebraic Ktheory. The talks and discussions involved all the participants. 
0438  Nichtkommutative Geometrie
[OWR200445] (2004)  (12 Sep  18 Sep 2004)These notes contain the extended abstracts of talks given at the meeting on ’noncommutative geometry’ in September 2004. The range of topics includes index theory, algebraic and topological Ktheory, cyclic homology, quantum ... 
2027  NonCommutative Geometry and Cyclic Homology (hybrid meeting)
[OWR202017] (2020)  (28 Jun  04 Jul 2020)The workshop on "NonCommutative Geometry and Cyclic Homology" was attended by 16 participants on site. 30 participants could not travel to Oberwolfach because of the pandemia and took advantage of the videoconference tool. ... 
1828  Noncommutative Geometry, Index Theory and Mathematical Physics
[OWR201832] (2018)  (08 Jul  14 Jul 2018)Noncommutative geometry today is a new but mature branch of mathematics shedding light on many other areas from number theory to operator algebras. In the 2018 meeting two of these connections were highlighted. For once, ... 
0937  Noncommutative Geometry
[OWR200941] (2009)  (06 Sep  12 Sep 2009)Many of the diﬀerent aspects of Noncommutative Geometry were represented in the talks. The list of topics that were covered includes in particular new insight into the geometry of a noncommutative torus, local index formulae ... 
1337  Noncommutative Geometry
[OWR201345] (2013)  (08 Sep  14 Sep 2013)Noncommutative Geometry applies ideas from geometry to mathematical structures determined by noncommuting variables. This meeting emphasized the connections of Noncommutative Geometry to number theory and ergodic theory. 
0736  Noncommutative Geometry
[OWR200743] (2007)  (02 Sep  08 Sep 2007)Many of the various aspects of Noncommutative Geometry were represented in the talks. This includes in particular index theory on foliated spaces, a number of results on spectral triples, noncommutative manifolds and ... 
1137  Noncommutative Geometry
[OWR201145] (2011)  (11 Sep  17 Sep 2011)Noncommutative Geometry applies ideas from geometry to mathematical structures determined by noncommuting variables. This meeting concentrated primarily on those aspects of Noncommutative Geometry that are related to index ... 
1325b  Quadratic Forms and Linear Algebraic Groups
[OWR201331] (2013)  (16 Jun  22 Jun 2013)Topics discussed at the workshop “Quadratic Forms and Linear Algebraic Groups” included besides the algebraic theory of quadratic and Hermitian forms and their Witt groups several aspects of the theory of linear algebraic ...