The Second Australia-China-Japan-Singapore-U.S.

Index Theory Conference

-- Noncommutative Geometry and K-Theory

May 29-June 2, 2023

the University of Tokyo, Japan

Organized by

Fei Han  

Tsuyoshi Kato  

Yasu Kawahigashi  

Varghese Mathai  

Hitoshi Moriyoshi  

Toshikazu Natsume  

Guoliang Yu  

Weiping Zhang  

Invited Speakers (Perspective Lectures)

Alain Connes*  

Steven Hurder*  

Satoshi Watamura  

Zhizhang Xie

Invited Speakers

Huitao Feng*

Sherry Gong

Yosuke Kubota

Galina Levitina

Xiaonan Ma

Toshikazu Natsume  

Raphael Ponge

Shu Shen

Yanli Song

Xiang Tang

Guo Chuan Thiang  

Hang Wang

Rufus Willett

Jianchao Wu

Yi-Jun Yao

* indicates an online talk.
Monday, May 29
9:30-10:30 Satoshi Watamura Noncommutative Geometry: Physicist's viewpoint
10:45-11:45 Xiaonan Ma Comparison of two equivariant eta forms
13:30-14:30 Hang Wang Delocalized l2-Betti numbers and higher Kazhdan projections
14:45-15:45 Toshikazu Natsume F. Noether's index theorem revisited
16:00-17:00 Yosuke Kubota Lifting finite propagation operators: applications to geometry and physics
Tuesday, May 30
9:30-10:30 Sherry Gong The Novikov conjecture, operator K theory, and diffeomorphism groups
10:45-11:45 Yanli Song η-invariant and higher APS index theorem
13:30-14:30 Yi-Jun Yao On two (noncommutative) index problems
14:45-15:45 Galina Levitina Index via scattering theory: Dirac operators on Rd
16:00-17:00 Huitao Feng* Superconnections and an Intrinsic GBC Formula for Finsler Manifolds
Wednesday, May 31
9:30-10:30 Xiang Tang Helton-Howe Trace, Connes-Chern Character, and Quantization
10:45-11:45 Rufus Willett Dynamic asymptotic dimension and Matui's HK conjecture
Thursday, June 1
9:30-10:30 Zhizhang Xie Index theory and scalar curvature
10:45-11:45 Shu Shen Coherent sheaves, superconnection, and the Riemann-Roch-Grothendieck formula
13:30-14:30 Guo Chuan Thiang Large-scale quantization and coarse cohomology
14:45-15:45 Raphael Ponge Semiclassical analysis and noncommutative geometry
16:00-17:00 Alain Connes* Exotic index theorems
Friday, June 2
9:30-10:30 Steven Hurder* Non-commutative geometry of solenoidal manifolds (slides)
10:45-11:45 Jianchao Wu The Novikov conjecture, groups of diffeomorphisms, and Hilbert-Hadamard spaces
* indicates an online talk.

The conference is open to everyone. Here is an instruction on how to come to our campus in Tokyo. We cannot give financial supports to participants except for invited speakers, unfortunately. If you have any inquiry, please send one to Yasuyuki Kawahigashi ( If you need an official invitation letter for administrations at your institution or a visa application, please also write to us.

The home page of Kawahigashi.