Apr. 11 
15:00  16:30 RIMS 206 
Yuki Arano (Kyoto)
Cohomology of quantum groups
Cohomology of a tensor category has been recently introduced by PopaShlyakhtenkoVaes and computed in the quantum sl_2 case by KyedRaumVaesValvekens using the DrinfeldYetter resolution obtained by Bichon. In this talk, we compute this cohomology for the higher rank case.


Apr. 14May 26 TGU Lecture 
Sci 3127 
Nigel Higson (Penn State/Kyoto)
The Noncommutative Geometry of Tempered Representations
April 14(F) 10:00  12:00, 21(F) 10:00  12:00, 28(F) 10:00  12:00 / 14:0016:00, May 12(F) 10:00  12:00 / 14:00  16:00, 19(F) 10:00  12:00, 26(F) 10:00  12:00.


Apr. 18 
15:00  16:30 RIMS 206 
Yasuyuki Kawahigashi (Tokyo)
The relative Drinfeld commutant and alphainduction
We study relative Drinfeld commutants of a fusion category in another fusion category in terms of halfbraidings. We identify halfbraidings with minimal central projections of the relative tube algebra and certain sectors of the LongoRehren subfactors. We apply this general machinery to various fusion categories arising from alphainduction and compute the relative Drinfeld commutants explicitly.


Apr. 20 Séminaire de travail 
10:00  RIMS 106 
Koichi Shimada (Kyoto)
KadisonSinger Problem (MarcusSpielmanSrivastava Theorem) 1


Apr. 25 
15:00  16:30 RIMS 206 
Narutaka Ozawa (RIMS)
Introduction to Tsirelson's Problem
Tsirelson's problem (in the weaker form) is one of the most important problem in quantum information theory, which is known to be equivalent to Connes's embedding problem. I will review it from an algorithmic point of view. The lecture also cover Slofstra's recent negative solution to the original (i.e., stronger) Tsirelson problem.


Apr. 26 (Wed) Colloquim 
16:30  17:30 Sci 3110 
Yusuke Isono (RIMS)
フォンノイマン環とdeformation/rigidity理論の紹介


Apr. 27 Séminaire de travail 
10:00  RIMS 106 
Koichi Shimada (Kyoto)
KadisonSinger Problem (MarcusSpielmanSrivastava Theorem) 2


May 09 
15:00  16:30 RIMS 206 
Nigel Higson (PennState/Kyoto)
C*algebras and the uniform admissibility of the discrete series
Many aspects of HarishChandra’s theory of tempered representations fit very naturally with C*algebra theory and noncommutative geometry. The principal results are easy to express in the language of C*algebras, and moreover there are noncommutativegeometric arguments that explain quite conceptually the general form of tempered representation theory, as I shall try to demonstrate. An exception, at least for the time being, is the “uniform admissibility property” of the discrete series. I shall explain what this property is, why it is important, and how it might be approached through C*algebras and noncommutative geometry.


May 1113 Workshop 
Sci 3127 
Advances in non commutative geometry


May 16 
15:00  16:30 RIMS 206 
Yasuhiko Sato (Kyoto)
Actions of amenable groups and absorption of the JiangSu algebra
In the recent classification theory of $\mathrm{C}^*$algebras, the absorption of the JiangSu algebra $\mathcal{Z}$ plays a central role. Actually, A. S. Toms and W. Winter conjectured that $\mathcal{Z}$absorption is equivalent to other regularity properties, such as strict comparison and finiteness of nuclear dimension, for standard nuclear $\mathrm{C}^*$algebras. Now, we know that this conjecture holds true under the assumption of unique tracial state.
In this talk, we study a permanence property of $\mathcal{Z}$absorption for crossed products by countable amenable groups. Assuming strict comparison and uniqueness of tracial state, we show that the crossed product of unital separable simple nuclear $\mathrm{C}^*$algebra absorbs the JiangSu algebra again.


May 23 
15:00  16:30 RIMS 206 
Norio Nawata (Osaka Kyoiku)
Trace scaling automorphisms of $\mathcal{W}\otimes\mathbb{K}$
We classify trace scaling automorphisms of $\mathcal{W}\otimes\mathbb{K}$ up to outer conjugacy, where $\mathcal{W}$ is a certain simple separable nuclear stably projectionless C$^*$algebra having trivial $K$groups. Mainly, we talk about a homotopy type theorem of unitaries in the central sequence C$^*$algebra $F(\mathcal{W})$ of $\mathcal{W}$.


May 25 
10:45  11:45 Sci 3108 
Tulio Gaxiola (CIMAT&Tohoku)
Spectral Analysis of Graphs: a NonCommutative Probabilistic outlook
In this talk we introduce some results about the relation of spectral distributions of some products of graphs with notions of noncommutative independece. Moreover, we explain recent results, in collaboration with Octavio Arizmendi, on spectral distribution of distancek graphs of star and free products of graphs.


May 25 
13:15  14:15 Sci 3108 
Camille Male (Bordeaux & CNRS)
Non commutative notions of independences
The convergence in traffic distribution of matrices enriches the convergence in non commutative distribution, and makes tractable the description of the limiting distribution of matrices invariant in law by permutation of the elements of the basis (in particular, of random graphs). In this presentation I will present three particular situations where the traffic independence reduces respectively to the free, the tensor or the Boolean independence.


May 2902 Intensive Lecture Course 
Sci 3127 
Yoshimichi Ueda (Kyushu)
ランダム行列に対する大偏差原理
29(M) 15:00  17:00, 30(T) 15:00  17:00, 31(W) 10:00  12:00, 01(T) 15:00  17:00, 02(F) 10:00  12:00. Colloquium May 31(W), 16:30  17:30
ランダム行列の固有値経験分布に対する大偏差原理を解説する．また，ランダム行列（の固有値経験分布）の行列サイズ無限大極限を記述する自然な枠組みとしての自由確率論を紹介する．なお，学部で習う標準的な測度論の知識は仮定するが，確率論の特別な知識は仮定しない．


May 31 (Wed) Colloquim 
16:30  17:30 Sci 3110 
Yoshimichi Ueda (Kyushu)
ランダム行列と作用素環


June 01 Séminaire de travail 
10:00  RIMS 106 
Koichi Shimada (Kyoto)
KadisonSinger Problem (MarcusSpielmanSrivastava Theorem) 3


June 20 
15:00  16:30 RIMS 206 
Reiji Tomatsu (Hokkaido)
Ultraproducts of crossed product von Neumann algebras
I will explain how to treat an ultraproduct von Neumann algebra of a crossed product von Neumann algebra using the notion of equicontinuity.


June 2628 Workshop 
RIMS 110 
Mathematical Aspects of Quantum Fields and Related Topics


July 11 
15:00  16:30 RIMS 206 
Sakie Suzuki (RIMS)
tba


July 18 
15:00  16:30 RIMS 206 
TBA ()
tba


July 26 Wed 
Sci 3127 
Workshop on interactions between commutative and noncommutative probability


Sep. 0406 
RIMS 111 
Recent developments in operator algebras

