### 2016

The Tokyo Institute of Technology, Topology seminar.
Seminar of Kobe, Kyoto, Osaka Universities (KOOK seminar).
Conference
"Intelligence of Low-dimensional Topology"
(Kyoto, May 2016).
Conference
"Workshop on Symplectic Geometry and Physics
- Floer theory and Hamiltonian dynamics -
"
(Sendai, May 2016).
### 2015

International Workshop in Geometry, Chinese University of Hong Kong.
The Tokyo Institute of Technology, Topology seminar.
Kavli IPMU, "Get together" Seminar.
### 2014

Institut Henri Poincare, Seminaire "Symplectix".
The Tokyo Institute of Technology, Topology seminar
Kavli IPMU, "Get together" Mathematics seminar
### 2013

Bogomolov Laboratory of Algebraic Geometry and its applications (HSE, Moscow), seminar.
The Tokyo University, Topology seminar
The Tokyo Institute of Technology, Topology seminar
Nihon University (Tokyo), Topology Seminar.
Kavli IPMU, Mathematics-String theory seminar
RIMS Kyoto, Seminar in Geometry and related topics
The Tokyo University, A talk for the program
"Leading Graduate Courses for Frontiers
of Mathematical Sciences and Physics"
### 2012

Tokyo University of Science, Singularities Seminar.
Nihon University (Tokyo), Topology Seminar.
### 2011

Conference
"Topology of singularities and related topics, II"
Sendai, Japan, January 5 - 9, 2011.
The Tokyo University Topology seminar
The Tokyo Institute of Technology Topology seminar
The IPMU seminar
Conference
"Circle valued Morse theory and Alexander invariants"
(two talks)
Tokyo, Japan, November 16 - 19, 2011.
### 2010

The Tokyo University Topology seminar
### 2009

Conference
"Intelligence of Low-dimensional Topology"
(Osaka, November 2009).
The Tokyo University Topology seminar
### 2008

The Fourth East Asian School of Knots and related topics,
Plenary talk:

Dynamics of gradient flows in the non-transversal
Morse theory
The Tokyo University Topology seminar
Nihon University (Tokyo), Topology Seminar
The Nara University Topology Seminar
Tokyo Graduate School of Mathematical Sciences:
A mini-course on the Morse-Novikov theory
### 2007

The Unversity of Nice Sophia-Antipolis, Topology and Algebra Seminar
### 2006

Ohio State University Topology Seminar (3 talks)
The University of Miami, Colloquium
Stanford University, The Symplectic Geometry seminar
Einstein Chair Mathematics Seminar
(CUNY, New York)
### 2005

Nihon University (Tokyo), Topology Seminar:

Circle-valued Morse functions and dynamics of gradient flows
Kyushu University (Fukuoka),
Topology Seminar
Workshop "Floer Homology and related topics"
(Kyoto)

1) The Morse-Novikov theory

2) Cellular gradients and Rationality theorem

3) Dynamics of gradient flows
Conference "Intelligence of Low-dimensional Topology"
(Osaka):

Novikov homology, twisted Alexander polynomials and Thurston cones
(pdf)
Bordeaux University, Geometry seminar,
### 2004

Conference
Topology of closed 1-forms
,
Zuerich.
Seminar "Lievre", The Geneva University, 2004.
Seminar "Gaston Darboux"
Montpellier University,
Conference
"Keldysh Centennial Conference",
Moscow, august 2004.
Conference "Differential Equations and Dynamical Systems",
Suzdal, June 2004.
Conference
"Rene Thom",
Nantes 2004
Mini-course on the circle-valued Morse theory
University La Sapienza (6 talks), Roma, 2004.
### 2003

Kolmogorov Centennial Conference, Moscow.
Conference "Topology and Computers"
Tokyo,
Conference "Topology of Knots 6"
Tokyo,
University La Sapienza, Rome
(3 talks)
Osaka University, Colloquium.
Seminar of Kobe, Kyoto, Osaka Universities (Kook seminar)
### 2002

Seminar Gaston Darboux
(Montpellier University)
Conference "Differential Equations and Dynamical Systems",
Suzdal.
### 2000

Geneva University, Seminar
Goettingen University, a
mini-cours in Morse-Novikov theory
ETH, Symplectic Geometry seminar
Colloque "Workshop on Geometry and Topology", Warwick University.