List of Talks in English

「Homological bulkedge correspondence for Weyl semimetal」
Topological Phases of Matter, Leysin, Switzerland, July 27, 2021.
(attended online)
Internatinal Conference on Discrete Geometric Analysis for Materials Design, online, September 26, 2021.

「Ktheory of Csymmetric gapped pseudoHermitian operators」
Topological Phenomena in NonHermitian and NonEquilibrium Systems, Tohoku University, February 24, 2020.

「Topological phase and generalized (co)homology」
Rigorous Statistical Mechanics and Related Topics, Kyoto University, November 20, 2019

Magnitude homology of geodesic space.
Magnitude 2019: Analysis, Category Theory, Applications,
The University of Edinburgh, UK, July 5, 2019.

Is magnitude related to physics of patterned resonators?
PDF
Topological Phases of Interacting Quantum Systems,
Casa Matemática Oaxaca, Mexico, June 6, 2019.

Band topology and submanifolds of matrices.
Progress in the Mathematics of Topological States of Matter,
Tohoku University, Japan, August 14, 2018.
Recent progress in mathematics of topological insulators,
ETH Zürich, Switzerland, September 5, 2018.

Topological crystalline insulators and Ktheory. I,II.
Topology & Condensed Matter
,
National Tsing Hua University, Taiwan, March 2223, 2018.

AtiyahHirzebruch Spectral Sequence in Band Topology.
Miniworkshop on Topological States and Noncommutative Geometry
,
Tohoku University, Japan, March 1, 2018.

Bott periodicity and Thom isomorphism in FreedMoore Ktheory.
Gauge theory and higher geometry
,
The University of Adelaide, Australia, Nov 30, 2017.

Classifications of some twisted equivariant bundles.
The second AustraliaJapan Geometry, Analysis and their Applications
,
Kisyu Shirahama Onsen Musashi, Shiramaha, Japan, Feb 3, 2017.

Ktheory, gapped quantum system and Csymmetric indefinite metric space.
The second AustraliaJapan Geometry, Analysis and their Applications
,
Kyoto University, Japan, Jan 31, 2017.
The AMS Sectional Meeting, Special Session on Topological Mathematical Physics
,
Indiana University, Bloomington, USA, Apr 2, 2017.

Ktheory of the torus equivariant under the 2dimensional crystallographic point groups.
Coloquio de Matemática UC
,
Pontificia Universidad Católica de Chile, Chile, Sep 9, 2016.

Introduction to topological Ktheory: Basics of topological Ktheory.
Noncommutative Topics: Miniworkshop in Mathematical Physics
,
Pontificia Universidad Católica de Chile, Chile, Sep 6, 2016.

Ktheory of the torus
equivariant under the 2dimensional crystallographic point groups.
PDF
AustraliaJapan Geometry, Analysis and their Applications
,
The University of Adelaide, Australia, Oct 21, 2015.

The FKMM invariant.
Miniworkshop on Topological States and Noncommutative Geometry
,
Tohoku University, Japan, Mar 23, 2015.

A variant of Ktheory and topological Tduality for "Real" circle bundles.
Seminar,
FriedrichAlexanderUniversität ErlangenNürnberg, Germany, Dec 4, 2014.

The FKMM invariant of `symplectic' vector bundles.
The Second ChinaJapan Conference on Noncommutative Geometry and Ktheory,
Okinawa, Japan, Oct 5, 2014.

The FKMM invariant in low dimension.
Differential geometry seminars,
The University of Adelaide, Australia, Sep 12, 2014.

Topological Tduality for Real circle bundles.
Further development of AtiyahSinger index theorem and Ktheory,
Kyoto University, Japan, Dec 19, 2013.

Mickelsson's twisted Ktheory invariant.
The 6th Pacific RIM Conference on Mathematics 2013, Sapporo, Japan, July 2, 2013.

Mickelsson's twisted Ktheory invariant and its generalization.
Discrete Geometry and Dynamical Systems,
Kyoto University, Japan, Jan 25, 2013;
MS Seminar,
IPMU, Japan, Mar 5, 2013.

Differential Ktheory and the Adams operation.
Seminar,
Aarhus University, Denmark, Dec 20, 2010;
East Asian Conference on Algebraic Topology, 4,
The University of Tokyo, Japan, Dec 8, 2011;
Topology and Analysis on Foliations,
Nagoya University, Japan, Mar 24, 2012.

Multiplication in differential cohomology and cohomology operation.
PDF
Quantum algebra related to various topological field theories in geometries,
Kyoto University, Japan, Feb 17, 2009.

An analogy of the space of conformal blocks in (4k+2)dimensions.
Geometry Seminar, The University of Hong Kong, China, Dec 2007.

Twisted Ktheory and finite dimensional approximation.
Geometry Seminar, The University of Texas at Austin, USA, Oct 2007;
Geometry Seminar, The University of Hong Kong, China, Nov 2007;
IMS Geometry Seminar, The Chinese University of Hong Kong, China, Nov 28, 2007.

An approach to finitedimensional realizations of twisted Ktheory.
PDF
MSJIHES Joint Workshop on Noncommutativity,
Institut des Hautes Études Scientifiques, France, Nov 2006

Twisted Ktheory and finitedimensional approximation.
PDF
School on Poisson geometry and related topics,
Keio University, Japan, June 2006

Representations of gauge transformation groups of higher abelian gerbes.
DVI
International Workshop on Noncommutative Geometry and Physics 2005,
Tohoku University, Japan, Nov 2005

Central extensions of gauge transformation groups of higher gerbes.
DVI
International Symposium on Recent Advances in Mathematics and its Applications,
Calcutta Mathematical Society, India, Dec 2003

The formulation of the ChernSimons action
for general compact Lie groups using Deligne cohomology.
DMVSeminar: Characteristic Classes of Connections, RiemannRoch Theorems, Analogies with epsilonfactors,
Mathematisches Forschungsinstitut Oberwolfach, Germany, Nov 2000