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.