Dorothea Bahns
In my talk I will report on recent joint work with Kasia Rejzner and Nicola Pinamonti on the massive…
June 23, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
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Lachlan MacDonald
Chern-Weil theory describes a procedure for constructing the characteristic classes of a smooth manifold from geometric data (such as…
June 21, 2021
09:00
UTC
Organized by Americas GNCG Seminar.
David Kyed
The Podleś spheres, which are q-deformed analogues of the 2-sphere, are among the most classical objects in non-commutative geometry, but…
June 16, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
Valerio Proietti
The hyperbolic sets of Smale’s Axiom A systems have been defined in the topological setting by Ruelle. We will…
June 14, 2021
09:00
UTC
Organized by Asia-Pacific GNCG Seminar.
Chi-Keung Ng
The aim of this article is to give an infinite dimensional analogue of a result of Choi and Effros…
June 9, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
Nigel Higson
June 9, 2021
15:15
UTC
Organized by Americas GNCG Seminar.
Nick Wright
Affine Weyl groups are a class of groups for which the group C^*-algebra can in principle be understood directly. …
June 7, 2021
09:00
UTC
Organized by Asia-Pacific GNCG Seminar.
Arkadiusz Bochniak
Models of noncommutative geometry that are beyond the usual almost-commutative framework that assumes product geometries, may lead to interesting…
June 2, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
Alain Connes
This is joint work with C. Consani. When contemplating the low lying zeros of the Riemann zeta function one…
June 2, 2021
17:15
CEST
Organized by Americas GNCG Seminar.
Romain Tessera
In a joint work with Anthony Genevois, we classify up to quasi-isometry the class of lamplighter groups over one-ended finitely…
May 31, 2021
11:00
CEST
Organized by Asia-Pacific GNCG Seminar.
Raimar Wulkenhaar
Finite-dimensional approximations of noncommutative quantum field theories are matrix models. They often show rich mathematical structures: many of them…
May 26, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
Steve Rosenberg
The Wodzicki residue can be used to build Chern classes and Chern-Simons classes for infinite dimensional bundles with pseudodifferential…
May 24, 2021
11:00
CEST
Organized by Asia-Pacific GNCG Seminar.
Koen van den Dungen
A well-known theorem by Connes and Skandalis provides sufficient conditions for finding the Kasparov product of two (bounded) Kasparov…
May 19, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
Zhengwei Liu
Quantum Fourier Analysis is a subject that combines an algebraic Fourier transform (pictorial in the case of subfactor theory) with…
May 17, 2021
11:00
CEST
Organized by Asia-Pacific GNCG Seminar.
Nikita Sopenko
Recently methods of quantum statistical mechanics have been fruitfully applied to the study of phases of quantum lattice systems…
May 14, 2021
14:00
EDT
Organized by Americas GNCG Seminar.
Karen Strung
Noncommutative Kähler structures were recently introduced by Ó Buachalla as a framework for studying noncommutative Kähler geometry on quantum…
May 12, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
Edward McDonald
I discuss how a Tauberian theorem for singular values of noncommuting operators allows us to prove Weyl asymptotic formulas…
May 10, 2021
09:00
UTC
Organized by Asia-Pacific GNCG Seminar.
Zhizhang Xie
In this talk, I will speak about my recent work on a relative index theorem for incomplete manifolds. As…
May 7, 2021
14:00
EDT
Organized by Americas GNCG Seminar.
Matthew Kennedy
Recently, Davidson and I introduced a new framework for noncommutative convexity and noncommutative function theory, along with a corresponding…
May 5, 2021
16:00
CEST
Organized by Europe GNCG Seminar.
Anna Skripka
We will discuss recent advancements in approximation of functional calculus arising in problems of mathematical physics and noncommutative geometry….
April 30, 2021
14:00
EDT
Organized by Americas GNCG Seminar.
Adam Skalski
We shall discuss a class of noncommutative probabilistic evolutions, understood as Markov semigroups acting on von Neumann algebras and…
April 28, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
Shin-ichi Oguni
We show a coarse version of the Cartan-Hadamard theorem,which states that proper coarsely convex spaces are coarsely homotopyequivalent to…
April 26, 2021
11:00
CEST
Organized by Asia-Pacific GNCG Seminar.
Ieke Moerdijk
Simplicial sets form a classical and well known tool for modelling topological spaces, and more recently topologically enriched categories…
April 23, 2021
14:00
EDT
Organized by Americas GNCG Seminar.
Sanaz Pooya
The Baum-Connes conjecture, if it holds for a certain group, provides topological tools to compute the K-theory of its…
April 21, 2021
14:00
CET
Organized by Europe GNCG Seminar.
Wilhelm Winter
I will try to put into context several well-known and one or two new facts around completely positive approximations of…
April 19, 2021
09:00
UTC
Organized by Asia-Pacific GNCG Seminar.
Yang Liu
As the counterpart of conformal geometry, modular geometry on noncommutative manifolds explores the basic notions such as metric and curvature…
April 16, 2021
14:00
EDT
Organized by Americas GNCG Seminar.
Paulo Carrillo Rouse
In this talk, I will report on joint work with B.L. WANG (ANU Canberra) et H. WANG (ECNU Shanghai). Given a discrete group \(G\), I…
April 14, 2021
14:00
CEST
Organized by Europe GNCG Seminar.
Adam Rennie
I will outline efforts to describe the Kasparov product of two unbounded Kasparov modules in terms of another unbounded…
April 12, 2021
09:00
UTC
Organized by Asia-Pacific GNCG Seminar.
Jean-Eric Pin
Abstract. I will report on a result recently obtained with Christophe Reutenauer.Let p be a prime number. Mahler’s theorem…
April 9, 2021
14:00
EDT
Organized by Americas GNCG Seminar.
Francesco Fidaleo
We discuss the explicit construction of non type \(II_1\) representations and relative modular spectral triples of the noncommutative 2-torus…
April 7, 2021
14:00
CET
Organized by Europe GNCG Seminar.
Omar Mohsen
Using techniques from noncommutative geometry, I will present a very general inhomogeneous pseudo-differential calculus which allows us to obtain…
April 5, 2021
11:00
CEST
Organized by Asia-Pacific GNCG Seminar.
Henrique Bursztyn
The notion of Morita equivalence, native to ring theory, plays an important role in noncommutative geometry and has a…
April 2, 2021
14:00
EDT
Organized by Americas GNCG Seminar.
Adam Magee
Twisted real structures were introduced in 2016 as a generalisation of real structures for spectral triples which permit the…
March 31, 2021
14:00
CET
Organized by Europe GNCG Seminar.
Benoît Collins
We will report on arXiv:2103.05962, written in collaboration with Tobias Mai, Akihiro Miyagawa, Felix Parraud and Sheng Yin. Random matrix…
March 29, 2021
18:00
JST
Organized by Asia-Pacific GNCG Seminar.
Dan Voiculescu
The quasicentral modulus is a numerical invariant associated with a n-tuple of Hilbert space operators and a normed ideal of…
March 26, 2021
18:00
UTC
Organized by Americas GNCG Seminar.
Hermann Schulz-Baldes
Parings of \(K\)-theory with Fredholm modules given by Dirac operators can be computed numerically as the half-signature of a…
March 24, 2021
14:00
CET
Organized by Europe GNCG Seminar.
Stefaan Vaes
I will report on a recent joint work with Sorin Popa in which we undertake a systematic study of…
March 22, 2021
10:00
CET
Organized by Asia-Pacific GNCG Seminar.
Pere Ara
It was shown by Austin in 2013 that the question by Atiyah about the rationality of $\ell^2$-Betti numbers has…
March 19, 2021
14:00
EDT
Organized by Americas GNCG Seminar.
Catherine Meusburger
We explain how to construct a Traev-Viro style state sum model with defects, where defect planes are labelled by…
March 17, 2021
14:00
CET
Organized by Europe GNCG Seminar.
Hao Guo
I will discuss two connections between quantitative operator K-theory and scalar curvature, arising from recent work with Zhizhang Xie…
March 15, 2021
20:00
GMT+11
Organized by Asia-Pacific GNCG Seminar.
Asghar Ghorbanpour
In recent years, the investigation of geometries of noncommutative tori has attracted attention from both mathematics and physics. In…
March 12, 2021
14:00
EST
Organized by Americas GNCG Seminar.
Paolo Piazza
The analysis of the signature operator and of the spin-Dirac operator on a \(\Gamma\)-Galois covering of a smooth compact…
March 10, 2021
14:00
CET
Organized by Europe GNCG Seminar.
Shilin Yu
The “coadjoint orbit method” philosophy of Kirillov and Kostant suggests that there is a close connection between the unitary…
March 8, 2021
17:00
GMT+8
Organized by Asia-Pacific GNCG Seminar.
Claire Debord
In this talk, after recalling basic facts on groupoids, we will see that the structure of a groupoid G…
March 5, 2021
14:00
EST
Organized by Americas GNCG Seminar.
Kristin Courtney
In the 1990s, Blackadar and Kirchberg introduced NF algebras, which arise as limits of inductive systems where the connecting…
March 2, 2021
15:00
CET
Organized by Europe GNCG Seminar.
Joachim Cuntz
Kasparov’s KK-theory which is based on so called Kasparov-modules can be described much more algebraically using universal extensions and classifying maps…
March 1, 2021
10:00
CET
Organized by Asia-Pacific GNCG Seminar.
Alcides Buss
In this lecture I will explain recent developments in the theory of amenability for actions of groups on C*-algebras…
February 26, 2021
14:00
EST
Organized by Americas GNCG Seminar.
Xiang Tang
In this talk, we will report our exploration of cyclic cohomology of the Harish-Chandra Schwartz algebra of a connected…
February 23, 2021
15:00
CET
Organized by Europe GNCG Seminar.
Eckhard Meinrenken
The idea of assigning weights to local coordinate functions appears in many areas of mathematics, such as singularity theory,…
February 19, 2021
14:00
EST
Organized by Americas GNCG Seminar.
Sergiy Neshveyev
Given a C$^*$-algebra $A$ with an almost periodic time evolution we define a new C$^*$-algebra $A_c$ whose states parameterize…
February 16, 2021
15:00
CET
Organized by Europe GNCG Seminar.
Henry Yuen
In low-degree testing the following question is considered: given a multivariate function over a finite field, if a sufficiently…
February 12, 2021
14:00
EST
Organized by Americas GNCG Seminar.
Sylvie Paycha
Meromorphic germs (say at zero) in several variables with linear poles naturally arise in the context of renormalisation, which…
February 9, 2021
15:00
CET
Organized by Europe GNCG Seminar.
Jens Hemelaer
We give an introduction to topos theory from a geometric point of view, focusing on toposes that arise from…
February 5, 2021
14:00
EST
Organized by Americas GNCG Seminar.
Lisa Glaser
When describing a Riemannian geometry as a spectral triple, the algebra of functions on the geometry is infinite. But…
February 2, 2021
15:00
CET
Organized by Europe GNCG Seminar.
Pierre Albin
Contact manifolds, which arise naturally in mechanics, dynamics, and geometry, carry natural Riemannian and sub-Riemannian structures and it was…
January 29, 2021
14:00
EST
Organized by Americas GNCG Seminar.
Andreas Thom
Given a group Γ, we establish a connection between the unitarisability of its uniformly bounded representations and the asymptotic behaviour…
January 26, 2021
16:00
CET
Organized by Europe GNCG Seminar.
Emil Prodan
Starting with the pioneering works of Jean Bellissard in the 1980’s,Non-Commutative Geometry has emerged as one of sharpest tools…
January 22, 2021
14:00
EST
Organized by Americas GNCG Seminar.
Francesco D’Andrea
If a quantum space X can be obtained by “gluing” two subspaces Y and Z, there is a Mayer-Vietoris…
January 19, 2021
15:00
CET
Organized by Europe GNCG Seminar.
Elmar Schrohe
The index theory for operator algebras generated by pseudodifferential operators and Fourier integral operators, more specifically Lie groups of…
January 12, 2021
15:00
CET
Organized by Europe GNCG Seminar.
Zhaoting Wei
December 16, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Iakovos Androulidakis
December 9, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Sheagan John
December 2, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Francesca Arici
November 17, 2020
00:00
CET
Organized by Europe GNCG Seminar.
Nigel Higson
November 11, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Ralf Meyer
November 10, 2020
15:00
CEST
Organized by Europe GNCG Seminar.
Rudy Rodsphon
November 4, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Christiaan van de Ven
November 3, 2020
15:00
CEST
Organized by Americas GNCG Seminar.
Matthew Lorentz
October 28, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Boris Tsygan
October 27, 2020
15:00
CEST
Organized by Europe GNCG Seminar.
Jonathan Block
October 21, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Henri Moscovici
October 20, 2020
15:00
CEST
Organized by Europe GNCG Seminar.
Paolo Piazza
October 14, 2020
18:00
UTC
Organized by Americas GNCG Seminar.
Nadia Larsen
October 13, 2020
15:00
CEST
Organized by Europe GNCG Seminar.
Bogdan Nica
October 7, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Nigel Higson
October 6, 2020
15:00
CEST
Organized by Europe GNCG Seminar.
Simone Cecchini
September 30, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Makoto Yamashita
September 29, 2020
15:00
CEST
Organized by Europe GNCG Seminar.
Rudolf Zeidler
September 23, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Alain Connes
September 22, 2020
15:00
CEST
Organized by Europe GNCG Seminar.
Kristin Courtney
September 16, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Anna Duwenig
September 9, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Bruno de Mendonca Braga
September 2, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Giovanni Landi
August 26, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Yi Wang
August 19, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Jonathan Belcher
August 12, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Jintao Deng
August 5, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Markus Pflaum
July 29, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Raphael Ponge
July 22, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Masoud Khalkhali
July 15, 2020
18:00
UTC
Organized by Americas GNCG Seminar.
Aurelien Sagnier
July 8, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Carla Farsi
June 24, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Shintaro Nishikawa
June 17, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Jianchao Wu
June 10, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Paolo Antonini
June 3, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Zhizhang Xie
May 27, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Rufus Willett
May 20, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Robin Deeley
May 13, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Yanli Song
May 6, 2020
18:00
UTC
Organized by Americas GNCG Seminar.
Boris Tsygan
April 29, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
Jonathan Rosenberg
April 22, 2020
19:00
UTC
Organized by Americas GNCG Seminar.
GRID View
Dorothea Bahns
Georg-August-Universität Göttingen
June 23, 2021
14:00
(CEST)
Lachlan MacDonald
University of Adelaide
June 21, 2021
09:00
(UTC)
David Kyed
Syddansk Universitet
June 16, 2021
14:00
(CEST)
Valerio Proietti
East China Normal University
June 14, 2021
09:00
(UTC)
Nigel Higson
Penn State University
June 9, 2021
15:15
(UTC)
Nick Wright
the University of Southampton
June 7, 2021
09:00
(UTC)
Arkadiusz Bochniak
Jagiellonian University, Krakow/ Indiana University Bloomington
June 2, 2021
14:00
(CEST)
Alain Connes
IHÉS/Collège de France
June 2, 2021
17:15
(CEST)
Romain Tessera
Institut de Mathématiques de Jussieu – Paris Rive Gauche
May 31, 2021
11:00
(CEST)
Raimar Wulkenhaar
Westfälische Wilhelms-Universität Münster
May 26, 2021
14:00
(CEST)
Steve Rosenberg
Boston University
May 24, 2021
11:00
(CEST)
Koen van den Dungen
Universität Bonn
May 19, 2021
14:00
(CEST)
Nikita Sopenko
Caltech
May 14, 2021
14:00
(EDT)
Karen Strung
Institute of Mathematics, Czech Academy of Sciences
May 12, 2021
14:00
(CEST)
Edward McDonald
University of New South Wales, Australia
May 10, 2021
09:00
(UTC)
Zhizhang Xie
Texas A&M University
May 7, 2021
14:00
(EDT)
Anna Skripka
University of New Mexico
April 30, 2021
14:00
(EDT)