115.	Canonical coordinates of moduli spaces of connections and Higgs bundles, isomonodromic deformations and differential equations of Painleve type, (11:20--12;10, March 11, 2023), The 3rd Shot of The 13th MSJ-SI "Differential Geometry and Integrable Systems" Celebrating Professor Yoshihiro Ohnita's retirement, Sugimoto Campus, Osaka Metropolitan University
114.	Moduli spaces of connections on curves, canonical coordinates and differential equations of Painleve type , (February 9, 2023), Seminaires Geometrie arithmetique 10:30--11:30, IRMAR, Rennes
113.	Moduli of connections, Hilbert schemes and Equations of Painlev´e type, (October 24, 2022), Workshop Painlev´e Equations: From Classical to Modern Analysis, IRMA, (Strasbourg) October 24 - 28, 2022.
112.	My 40 Years with Algebraic Geometry and Integrable Systems --Memories and corrections--, (February 10, 2022), Algebraic Geometry and Integrable Systems 2022, Online (Kobe University), February 8 - 11, 2022.
111.	Apparent singularities of connections and Higgs bundles on a curveand canonical coordinates of their moduli spaces.(A joint work with S. Szabo), (October 9, 2019), Mini Workshop on Geometry of Moduli Spaces, Kobe University, October 9 - 10, 2019.
110.	Moduli spaces of parabolic Higgs bundles and parabolic connections on curves and integrable systems, (April 29, 2019), Geometry and Integrable Systems A Franco-Japanese conference, Université de Bourgogne, Dijon, France, April 29 - May 3, 2019.
109.	Moduli spaces of parabolic Higgs bundles and parabolic connections on curves and Integrable systems,, (February 25, 2019), Séminaire Géométrie et applications, IRMA, University of Strasbourg, Strasbourg, France, February 25, 2019.
108.	Moduli spaces of parabolic Higgs bundles and parabolic connections on curves and Integrable systems, (October 22, 2018), Recent developments in Higgs theory, Laboratory of Mirror Symmetry, NRU HSE, Moscow, Russia, October 22–27, 2018 .
107.	Moduli spaces of parabolic connections, parabolic bundles and Geometric Langlands, (September 13, 2018), Geometry and Physics of Quantum Curves, Banff International Research Station, Banff, Alberta Canada, September 9 - 14, 2018.
106.	Moduli spaces of parabolic connections and parabolic bundles and Geometric Langlands, (July 16, 2018), Quantum Fields, Geometry and Representation Theory, Madhava Lecture Hall, ICTS, Bangalore, India, July 16 - 27, 2018.
105.	Explicit geometric structures of moduli spaces of parabolic connections and parabolic Higgs bundles over a curve, (January 5, 2018), Lectures, Tata Institute of Fundamental Research, Mumbai, India, January 5, 2018.
104.	Geometry of moduli spaces of connections and Higgs bundles over curves and Integrable Systems, (September 15, 2017), Geometry of moduli spaces and integrable systems, Gakushuin University, September 15 - 16, 2017.
103.	Moduli spaces of connections and Higgs bundles over curves and Geometric Theory of equations of Painlevé type, (August 17, 2017), Miniworkshop ``Exceptional and ubiquitous Painlevé equations for Physics" LPTENS summer institute, Laboratoire de Physique Théorique, École Normale Supérieure, Paris, France, August 16 - 18, 2017.
102.	Geometry of moduli space of parabolic connections with irregular singularities on curves, (April 11, 2017), Hodge Theory, Stokes Phenomenon and Applications, Luminy, France, April 10 - 14, 2017.
101.	Geometry of moduli spaces of parabolic connections and Higgs bundles and their relation to Integrable Systems, (March 29, 2017), Complex Analytic Geometry, Tata Institute of Fundamental Research, Mumbai, March 27 - 31, 2017.
100.	Moduli spaces of connections and Higgs bundles: Algebraic geometry and differential equations of Painlevé type , (December 7, 2016), Algebraic Geometry and Integrable Systems, Kobe 2016, Kobe University, December 5 - 9, 2016.
99.	An explicit geometry of moduli spaces of Higgs bundles and Singular connections on a smooth curve and differential equations of Painlevé types, (August 12, 2016), Geometry, Topology and Dynamics of Moduli Spaces, National University of Singapore, August 1 - 19, 2016.
98.	An Explicit Geometry of Moduli Spaces of Higgs Bundles and Singular Connections on a Smooth Curve and Differential Equations of Painlevé Types , (July 7, 2016), 2016 AMS von Neumann Symposium, Hilton Charlotte University Place Hotel, NC USA, July 4 - 8, 2016.
97.	Geometry of the moduli spaces of Parabolic Higgs bundles and Connections and applications to Painleve equations. (3 lectures), (May 23-24, 2016), KIAS Workshop on Higgs bundles and related topics, KIAS Korea, May 23 - 26, 2016.
96.	An explicit geometry of moduli spaces of Higgs bundles and Singular connections on a smooth curve and differential equations of Painlevé types (2 lectures), (May 2, 2016), Flat connections, Higgs bundles and Painleve equations, National Taiwan University, Taiwan, May 1 - 5, 2016.
95.	The moduli spaces of parabolic connections and Higgs bundles over a smooth curve and differential equations of Painlevé type , (October 22, 2015), Differential and Difference Equations: Analytic, Arithmetic and Galoisian Approaches , Lille University, October 19 - 23, 2015.
94.	Application of quiver varieties to the control theory, (July 29, 2015), Kobe - Lyon Summer School in Mathematics 2015, Kobe University, July 21 - 31, 2015.
93.	Moduli spaces of connections and Higgs bundles and geometry of spectral curves (II), (May 11, 2015), TIMS-OCAMI-WASEDA International workshop on Painleve equations and related topics, National Taiwan University, May 10 - 13, 2015 .
92.	Moduli spaces of connections and Higgs bundles and geometry of spectral curves (I), (May 10, 2015), TIMS-OCAMI-WASEDA International workshop on Painleve equations and related topics, National Taiwan University, May 10 - 13, 2015 .
91.	Canonical coordinates of moduli spaces of parabolic connections and para-bolic Higgs bundles., (February 16, 2015), The 10th Kagoshima Algebra - Analysis - Geometry Seminar, Kagoshima University, February 16 - 19, 2015 .
90.	Canonical coordinates of moduli spaces of parabolic connections and parabolic Higgs bundles (joint work with Szilard Szabo), (November 15, 2014), Japan-Taiwan workshop on Moduli spaces of flat connections on surfaces and related topics , Waseda University, Tokyo, November 15 - 16, 2014 .
89.	Canonical coordinates of moduli spaces of parabolic connections and parabolic Higgs bundles (joint work with Szilard Szabo), 2014 Workshop in Algebraic Geometry, (November 5, 2014), AMSS, Beijing, China, November 3 - 6 2014 .
88.	Moduli spaces of connections with irregular singularities and Riemann-Hilbert correspondences, Seminar on Algebraic Geometry and Differential Geometry, Alfréd Rényi Institute of Mathematics, Budapest, Hungary, October 3 2014 .
87.	Geometry of Riemann-Hilbert correspondences and Painlevé type equations, Kobe-Leuven workshop on Geometry and Integrable Systems, (July 8, 2014), KU-Leuven, Belgium, July 7 -9 2014 .
86.	Apparent singularities of connections and Higgs bundles and canonical coordinates of their moduli spaces, (July 2, 2014), Moduli Spaces of Connections, Rennes1, Rennes, France, July 1- 3, 2014 .
85.	Moduli spaces of singular connections, Character varieties and Geometry of Riemann-Hilbert correspondence, Geometry Seminar(Chair:Tamaz Hausel), EPFL, Lausanne, Switzerland, April 28, 2014 .
84.	Symétries d'Okamoto, (April 1, 2014), Espaces de modules des équations de Painlevé, IRMA, Strasbourg, France, March 31 - April 2, 2014 .
83.	On the geometry of isomonodromic differential equations (I), On the geometry of isomonodromic differential equations (II), (March 22･23, 2014), The 6th TIMS-OCAMI-WASEDA Joint International Workshop on Integrable Systems and Mathematical Physics, National Taiwan University, Taiwan, March 22 - 26 2014 .
82.	Lagrangian fibrations in duality on moduli spaces of rank 2 logarithmic connections over the projective line, (November 23, 2013), Workshop on: Isomonodromic deformations and related topics , Waseda University, Tokyo, November 22 - 23, 2013 .
81.	Painlevé property for isomonodromic equations; Algebraic construction of the phase spaces and the Riemann-Hilbert correspondence , (November 4, 2013), Recent progress in the theory of Painlevé equations: algebraic, asymptotic and topological aspects , IRMA, Strasbourg, France, November 24 - 8, 2013 .
80.	Apparent singularities and canonical coordinates for the moduli spaces of singular connections (a joint work with S. Szabo), (October 1, 2013), Symplectic Algebraic Geometry, Kansai seminar house, Kyoto, September 29 - October 5, 2013.
79.	Lagrangian fibrations in duality on moduli space of logarithmic connections over a curve (joint works with Frank Loray), (September 19, 2013), Moduli theory in Algebraic geometry and Integrable systems, RIMS, Kyoto University, September 17 - 20, 2013.
78.	Lagrangian fibration in duality on moduli space of rank two logarithmic connections over the projective line (joint work with F. Loray), (May 3, 2013), Algebraic Geometry and Differential Topology Seminar, Alfred Renyi Institute of Mathematics, Budapest, Hungary, .
77.	Geometry of moduli spaces of linear connections on curves and differential equations of Painlevé type, (July 3, 2012), Differential Algebra and Galois Theory, 6th European Congress of Mathematics, Kraków, Poland, July 2 - 7, 2012.
76.	Geometry of moduli spaces of linear connections on curves and differential equations of Painlevé type, (June 5, 2012), Singularités d'Équations DIfférentielles en Géométrie Algébrique, CIRM, France, June 4 - 8, 2012.
75.	Geometry of moduli spaces of connections, isomonodromic deformations and Painlevé equations, Workshop on Isomonodromic deformations and related topics, Tokyo Metropolitan University, Japan, January 27, 2012.
74.	Lagrangian fibrations on the moduli spaces of singular connections of curves, (June 7, 2011), 2011 TIMS Summer School on Mirror Symmetry, TIMS, Taiwan, June 7 - 9, 2011.
73.	Ten families of linear connections, Painleve equations and monodromy data, Workshop on Isomonodromy Theory, TIMS, Taiwan, June 3, 2011.
72.	Geometry of Riemann-Hilbert correspondence, Isomonodromy and equations of Painleve type I, (April 18, 2011), Geometry of Riemann-Hilbert correspondence, Isomonodromy and equations of Painleve type II, (April 19, 2011), Program 2.: Integrable Systems & Frobenius Manifolds (Program in Mirror symmetry, Isomonodromy and Integrable system), TIMS, Taiwan, March 1 - May 31, 2011.
71.	Lagrangian fibrations on the moduli space of parabolic connections, (February 8, 2011), Around twistor structures and nonabelian Hodge theory, SÉDIGA Workshop, ENS Paris, February 8, 2011.
70.	The moduli spaces of stable parabolic λ-connections and their canonical coordinates (Joint works with M. Inaba and with S. Szabo), (September 21, 2010), Moduli spaces of meromorphic connections, SÉDIGA Workshop, ENS Paris, September 21-22, 2010.
69.	Some topics on moduli theory of connections on curves, (May 6, 2010), Seminaire d'Algebre, Topologie et Geometrie, Laboratoire J. A. Dieudonné, Université de Nice Sophia-Antipolis.
68.	On moduli spaces of lambda-connections on curves with singularities, (November 25, 2009), Integrable twistor structures and Brieskorn lattices, Mannheim, November 25-27, 2009.
67.	The moduli spaces of lambda-connections with sigularities and Painleve equation, (November 20, 2009), Algebraic Geometry and Differential Topology Seminar, Alfred Rényi Institute of Mathematics, Budapest, Hungary.
66.	Moduli spaces of meromorphic connections and Riemann-Hilbert correspondences, (July 22, 2009), Kobe Workshop on Geometry of Moduli Spaces, Kobe University, July 20 - 22, 2009.
65.	Deligne-Hitchin-Simpson's twistor spaces and degenerations of isomonodromic flows, (July 15, 2009), RIMS Workshop on Non-abelian Hodge theory and Geometry of Twistor structures, RIMS, Kyoto, July 13 - 16, 2009.
64.	Families of affine cubic surfaces arising from generalized monodromy data, (July 3, 2009), Symposium ``Hodge theory and algebraic geometry": Occasion of the 60th birthday of Sampei Usui, RIMS, Kyoto University, June 29-July 3, 2009.
63.	Moduli theory of connections and Geometry of Riemann-Hilbert correspondences, (June 16, 2009), RTG Graduate Summer School 'Geometry of quantum fields and strings', University of Pennsylvania, June 8-20, 2009.
62.	Linear connections on curves and their isomonodromic deformations, (17:20-18:20, March 9, 2009), Seminar Talk, KIAS, Seoul, Korea.
61.	Deligne-Hitchin-Simpson twistor spaces and degenerations of Painlevé equations, (Sept. 18, 2008), algebraic geometry seminar, the Laboratoire J.A. Dieudonne, University of Nice.
60.	Deligne-Hitchin-Simpson’s twistor spaces for non-compact case and degeneration of Painlevé equations, (15:20-16:10, July 13, 2008), Hayama Symposium on Complex Analysis in Several Variables XII, Shonan Village Center, July 12–16, 2008.
59.	Deligne-Hitchin-Simpson's Twistor space for non-compact case and a degeneration of Painleve' equations, (13:20-14:20, June 9, 2008), Workshop on Gromov-Witten Theory and Related Topics, KIAS, Seoul, June 9-13, 2008.
58.	A Calabi-Yau threefold with abelian fibration and Z/2Z-action,(14:00-14:30, May 30, 2008), String Phenomenology 2008, University of Pennsylvania, May 28 - June 1, 2008.
57.	Deligne-Hitchin-Simpson's Twistor space for non-compact case and a degeneration of Painlevé VI equations, (09:30-10:30, April 29, 2008), Workshop in Algebraic Geometry and Mathematical Physics, CUHK, April 28 - 30, 2008.
56.	Deligne-Hitchin-Simpson's Twistor space for non-compact case and a degeneration of Painlevé equations, (09:15-10:15, April 1, 2008), Workshop on The geometry and integrability of topological QFT and string theory, University of Warwick, March 31--April 5, 2008.
55.	Moduli of Monodromy-Stokes data for Painlevé equations, 1:00, March 7, 2008, Math-Physics Joint Seminar: 2007-2008, University of Pennsylvania, DRL 4N30.
54.	Moduli spaces of linear connections and Riemann-Hilbert correspondences , (16:10--17:10, January 7, 2008) New developments in Algebraic Geometry, Integrable Systems and Mirror symmetry, RIMS, Kyoto, January 7--11, 2008.
53.	Moduli spaces of linear connections over curves, Riemann-Hilbert correspondences and equations of Painlevé type, (10:40--11:30, November 3, 2007), Complex Geometry in Osaka in honour of Akira Fujiki's 60th birthday, Nakanoshima Center, November 1--5, 2007.
52.	Algebro-geometric constructions of phase spaces, Riemann-Hilbert correspondences and Painlevé property, (11:15--12:15, October 11, 2007), Differential Equations and Exact WKB Analysis, Lecture Hall of RIMS, Kyoto University, October 9--12, 2007.
51.	Compactifications of Moduli spaces of stable parabolic connections and Riemann-Hilbert correspondences, (April 20. 11:30-12:30, 2007), MariusFest, Groningen, April 16-20, 2007.
50.	Moduli spaces of stable parabolic connections,Riemann-Hilbert correspondences, and geometry of equations of Painlevé type, Math-Physics Joint Seminar, University of Pennsylvannia, February, 2, 2007. Philadelphia, USA.
49.	Geometry of equations of Painleve type, {\em London Mathematical Society Durham Symposium, Methods of Integrable Systems in Geometry}, August, 11--21, 2006. The University of Durham, Durham, England.
48.	Painlevé Property of ODEs and Deformation of Logarithmic Symplectic Varieties, {June, 7, 2006, 4:15pm--5:15pm}, {\em The BIRS five day workshop, Modular Forms and String Duality}, June,3--6, 2006, BIRS, Banff, Canada.
47.	{\em Painlevé equations and Algebraic Geometry }, Geometry Intercity Day, R.u. Groningen, (11:30--12:30 and 16:15--17:15, 17, February, 2006).
46.	{\em Moduli of parabolic connections and \\ Geometry of equations of Painleve' type}, Oberseminar algebraische Geometrie, Universit\"at Mannheim, (16:00--17:00, 7, February, 2006).
45.	Global moduli of stable parabolic connections with higher order poles and geometry of integrable systems, 9/28/2005, 16:00 ～17:00, 名古屋大学大学院多元数理科学研究科（理1-509室), －Workshop"Moduli, Compactifications and related Topics- 浪川幸彦先生還暦研究集会, September 28-30, 2005.
44.	Moduli of stable parabolic connections, Riemann-Hilbert correspondences and Geometry of Painleve' equations 9/20/2005, 10:00-10:45, Conference on Riemann-Hilbert Problems, Integrability and Asymptotics, SISSA - TRIESTE, SEPTEMBER 20-25, 2005.
43.	Moduli of stable connections and Riemann-Hilbert correspondences, Mini-Workshop on Modular forms, Calabi-Yau varieties and String Duality, Tsuda College, AV center, Tokyo, June, 12, 2005
42.	March 21, 2005: {\em The Modularity conjecture for a rigid Calabi-Yau 3-folds over ${\bf Q}$}, Workshops on Arithmetic Geometry and Number theories, March 21--25, Niji no Matsubara Hotel, Karatsu, Saga, Japan.
41.	November 3, 2004: {\em Geometry of equations of Painleve type} Korea - Japan Joint Workshop in Mathematics 2004, Symplectic Topology and Mathematical Physics November 1 - 5, 2004 KIAS, Seul, Korea.
40.	July 3, 2004: {\em Moduli spaces of parabolic Higgs bundles, their deformations and Integrable systems} Korea-Japan Conference on Algebraic Geometry in honor of Professor Igor Dolgachev on his 60th birthday July 9, 2004, KIAS, Seoul, KOREA.
39.	March 23, 2004, {\em Geometry of Painlevé VI and Garnier equations--Moduli space of stable parabolic connections and the Riemann-Hilbert correspondence}, (16:00--17:00, 23, March, 2004), Seminar talk, ENS, Paris France.
38.	March 22, 2004, {\em Geometry of Painlev\'e VI and Garnier equations--Moduli space of stable parabolic connections and the Riemann-Hilbert correspondence}, (14:00--15:00, 22, March, 2004), Seminar of Complex Geomerty, Institut Fourier, Grenoble, France.
37.	October 21, 2003, {\em Geometry of Painlev\'e VI equations, moduli of stable parabolic bundles and Riemann-Hilbert correspondence}, (14:00--15:30, 21, October, 2003), Informal seminar talk at the seminar of Professor M. van der Put, Rijksuniversiteit Groningen.
36.	October 20, 2003, {\em Relative Lefschetz Action, BPS State Counting and the Gopakumar-Vafa conjecture. }, (16:00--17:00, 20, October, 2003), Talk at Seminar of Algebra and Geometry, Korteweg-de Vries Instituut Universiteit van Amsterdam (Organizer, Professor G. van der Geer).
35.	October 16, 2003, {\em Geometry of Painlelé VI equations-Moduli space of stable parabolic connections and the Riemann-Hilbert correspondence.}, (15:30--17:15, 16, October, 2003), Talk at Algemeen Colloquium at Mathematisch Instituut, Universiteit Utrecht (Organizer, Gunther Cornelissen and Johan van de Leur).
34.	October 14, 2003, {\em Riemann-Hilbert correspondences as symplectic resolutions of singularities}, (16:00--17:00, 14, October, 2003), Talk at Topology and Geometry seminar, Mathematisch Instituut, Universiteit Utrecht , Organizers, Eduard Looijenga, Ieke Moerdijk, Dirk Siersma, Balazs Szendroi.
33.	January 27, 28, 2003: The Gromov-Witten invariants and BPS states countings--A Gopakumar-Vafa conjecture, The 4th Postech Algebraic Geometry Winter School on Frobenious Manifolds and Singularity Theory, 26-29 January, 2003 (4 days), The Kolon Hotel in Gyeong-ju (Kyung-ju), KOREA. (連続講義）.
32.	November, 27, 2002: Moduli space of flat connections and Affine Weyl groups, KOREA-JAPAN JOINT WORKSHOP in MATHEMATICS, Algebraic Geometry and Related Topics, November 26-28 (Tues-Thur), 2002, KIAS, Seoul, Korea.
31.	July 12, 2002: M.-H. Saito: Geometric characterizations of equations of Painleve' type, Workshop on Frobenius manifolds, quantum cohomology, and singularities dedicated to Yuri I. Manin on the occasion of his 65th birthday, July 8-19, 2002, MPIM, Bonn, Germany.
30.	January 11, 2002： Painlevé equations and deformation of rational double points, International workshop on Categorical Algebra, Deformation Theory and Field Theory, Kyoto University, Jan. 7 --Jan 11, 2002.
29.	November 13, 2001: Deformation of logarithmic symplectic manifolds and equations of Painlev\'e type, Invited talk at International Workshop on Moduli, Nagoya University, Graduate School of Mathematics, Nov. 12 --14, 2001.
28.	September 6, 2001: {\em Deformation of logarithmic symplectic manifolds and Painlev\'e equations}, Invited talk at the International Conference on Geometry of Moduli Spaces and Integrable Systems, RIMS, Kyoto University, September, 3 (Mon) -- 7 (Fri), 2001.
27.	July 27, 2001: {\em Deformation of Okamoto--Painlev\'e pairs and Painlev\'e equations}, Invited Talk at Workshop on Arithmetic, Geometry and Physics around Calabi-Yau Varieties and Mirror Symmetry, The Fields Institute, (Tronto, Canada), July 23-29, 2001.
26.	July 25, 2001: {\em Relative Lefschetz action and BPS state counting}, Invited Talk at Workshop on Arithmetic, Geometry and Physics around Calabi-Yau Varieties and Mirror Symmetry, The Fields Institute, (Tronto, Canada), July 23-29, 2001.
25.	June 26, 2001: {\em Relative Lefschetz action and BPS state counting}, invited talks at the China International Conference on Symplectic Geometry and Topology, Sichuan University, Nankai University, and PekingUniversity, China, 2001 June 24, --July 6.
24.	May 7, 2001 {\em Relative Lefschetz action and BPS state counting via moduli of sheaves' (I)}, invited talk at 4th SIGRAV GRADUATE SCHOOL ON CONTEMPORARY RELATIVITY AND GRAVITATIONAL PHYSICS and 2001 SCHOOL ON ALGEBRAIC GEOMETRY AND PHYSICS (SAGP2001), Villa Olmo (Como, Italy), May 7--11, 2001.
23.	Jan. 15, 2001: Deformations of Okamoto--Painlevé pairs and Painlevé equations, Arithmetic and Algebraic Geometry, Univesity of Tokyo, 2001, organized by T. Katsura, Jan. 15--18., Jan. 15.
22.	Octboer 25, 2000(Wed): Symmetries of Painleve' equations, Okamoto-Painleve' pairs and rational double points, Singularity Theory workshop, APPLICATIONS TO QUANTUM FIELD THEORY, 23 October - 27 October 2000, Isaac Newton Institute for Mathematical Sciences, Cambridge, UK.
21.	October 17, 2000: Deformation of Okamoto--Painlev\'e pairs and Painlev\'e equations, WORKSHOP ON ALGEBRAIC GEOMETRY AND PHYSICS, ALGEBRAIC GEOMETRY AND INTEGRABLE SYSTEMS, SISSA, Trieste, October 16-19, 2000.
20.	Symmetries of affine Weyl groups of Painlev\'e equations, Geometry of Moduli Spaces, Japan-Britain Joint Research Project 2000 at Warwick, August 3, 2000. Conference Talk.
19.	Algebraic Geometry of Painlevé equations I, II, Geometry of Moduli Spaces, Japan-Britain Joint Research Project 2000 at Warwick, July 19, 21, 2000. Seminar Talk.
18.	Deformation of Okamoto--Painlevé pairs and Painlevé equations. RIMS Project 1999/2000, Algebraic Geometry and Integrable Systems related to string theory. June, 12, 2000. 60 minutes talk.
17.	The mirror symmetry conjecture for Schoen's Calabi-Yau 3-folds, AMS Joint Summer Institute for ``Quantum Cohomology", Mt Holyoke College, USA, June 28--July 2 1998. One hour talk.
16.	Prepotentials of Yukawa couplings of certain Calabi-Yau 3-folds and　Mirror Symmetry, Nato Advanced Study Institute, CRM Summer School, Banff, Canada, June 7-19, 1998. Invited talk.
15.	Prepotential of Yukawa couplings of certain Calabi-Yau 3-folds and La ttice Theta Functions, 谷口国際数学シンポジュム「可積分系と代数幾何学」, 六甲オリエンタルホテル, June, 1997.
14.	Yukawa coupling of certain Calabi-Yau 3-folds, RIMS, Kyoto, December, 1996.
13.	Signature defects of degeneration of abelian varieties, Algebraic Geometry seminar, Amsterdam University, Netherland, March, 1995.
12.	Mordell-Weil lattices and certain Calabi-Yau 3-folds, Algebraic Geometry, Utrecht Univerisity, Netherland, March, 1995.
11.	Mordell-Weil lattices and certain Calabi-Yau 3-folds, Cambridge-Oxford-Warwick Joint Seminar on Algebraic Geometry, November, 1994.
10.	Signature defects of degeneration of abelian varieties, Colloquium talks, Warwick University, October, 1994.
9.	N\'eron models of Abelian varieties and Mordell-Weil groups, 代数幾何学国際シンポジウム, 埼玉大学, June, 1993.
8.	On Mordell-Weil groups of Abelian Scheme, International Symposium on Holomorphic Mappings, Diophantine Geometry and related topics, RIMS, Kyoto, October, 1992.
7.	Non-rigid families of Abelian Varieties, Journées de Géométrie Algébrique d'ORSAY, Paris, July, 1992.
6.	Finiteness of Mordell-Weil groups of Kuga fiber spaces, Algebraic Geometry seminar, Kaiserslautern University, July, 1992.
5.	Finiteness of Mordell-Weil groups of Kuga fiber spaces, Algebraic Geometry seminar, Manheim University, July, 1991.
4.	Finiteness of Mordell-Weil groups of Kuga fiber spaces, Algebraic Geometry seminar,Essen Universiry, Germany, July, 1991.
3.	Finiteness of Mordell-Weil groups of Kuga fiber spaces, JAMI Algebraic Geometry seminar, The Johns Hopkins University, Baltimore, USA, February, 1991.
2.	Non-rigid families of K3 surfaces and a finiteness theorem of Arakelov-type, Algebraic Geometry seminar, Duke University, March, 1991.
1.	Non-rigid families of K3 surfaces and a finiteness theorem of Arakelov-type, JAMI Algebraic Geometry seminar, The Johns Hopkins University, Baltimore, USA, November, 1990.