- [1] May 16,23,30, 2000,
*Classification of nuclear C*-algebras*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [2] August, 10,11, 2000,
*Construction and classification of C^*-algebras*, in 35th Functional Analysis meeting (August 10 - 12, 2000) at National Olympics Memorial Youth Center, Tokyo. - [3] May, 29, 2001,
*On crossed products of Cuntz algebras by quasi-free actions of abelian groups*, in Operator Algebras one-year program, at MSRI, Berkely, USA. - [4] June, 12, 2001,
*On crossed products of Cuntz algebras by quasi-free actions of abelian groups*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [5] July 6, 2001,
*AF-embedding of crossed products of Cuntz algebras*in 4th Operator Algebras International Conference (July 2 - 7, 2001) at Constanta, Romania. - [6] August, 14, 2001,
*Crossed products of Cuntz algebras*, in 36th Functional Analysis meeting (August 13 - 15, 2001) at Shirahamasou, Shiga. - [7] September, 12, 2001,
*AF-embedding of crossed products of Cuntz algebras*, in Operator Algebras and Their Applications (September 12 - 14, 2001) at RIMS, Kyoto University. - [8] December, 4, 2001,
*C*-algebras arising from continuous graphs*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [9] January, 24, 2002,
*Continuous graph algebras*, in Recent Aspects of C^*-algebras (January 23 - 25, 2002) at RIMS, Kyoto University. - [10] March, 5, 2002,
*Crossed products of Cuntz algebras*, in Analysis seminar at University of Oregon, Eugene, USA. - [11] May, 25, 2002,
*Ideal structures of crossed products of Cuntz algebras*, in The Great Plains Operator Theory Symposium, 2002 (May 21 - 26, 2002) at University of North Carolina at Charlotte, USA. - [12] July, 31, August, 2, 2002,
*On classification theory of C^*-algebras*, in 37th Functional Analysis meeting (July 30 - August 2, 2002) at Seminar House Kogakkan, Kansai University. - [13] August, 17, 2002,
*A class of C^*-algebras generalizing both graph algebras and homeomorphism C^*-algebras*, in ICM2002 Satellite Conference on Operator Algebras and Applications (August 14 - 18, 2002) at Chengde, China. - [14] September, 6, 2002,
*A continuous analogue of Cuntz-Krieger algebras*, in A classification of symbolic dynamical systems and its applications to operator algebras (September 6 - 8, 2002) at Research and International Exchange Plaza, Kyushu University. - [15] September, 12, 2002,
*A class of C^*-algebras generalizing both graph algebras and homeomorphism C^*-algebras*, in The structure of operator algebras and its applications (September 11 - 13, 2002) at RIMS, Kyoto University. - [16] November, 7, 2002,
*Graph algebras, homeomorphism C^*-algebras, and their generalization*, in Functional analysis colloquium, at University of California, Berkeley, USA. - [17] November, 10, 2002,
*A continuous analogue of graph algebras*, in Groupoid Fest 2002 (November 9 - 10, 2002) at University of Nevada, Reno, USA. - [18] November, 14, 2002,
*A new concept of topological dynamical systems and thier C^*-algebras*, in Analysis-Topology seminar, at University of Nevada, Reno, USA. - [19] December, 3, 2002,
*A generalization of dynamical systems and their C^*-algebras*, in Analysis seminar at University of Oregon, Eugene, USA. - [20] January, 18, 2003,
*A class of nuclear C^*-algebras associated with topological graphs*, in AMS Special Session on C^*-Extensions and Classifications of C^*-Algebras, Joint Mathematics Meetings (January 15 - 18, 2003), at Baltimore Convention Center, Baltimore, USA. - [21] March, 26, 2003,
*A construction of C^*-algebras from C^*-correspondences*, in Annual Meeting of Mathematical Society of Japan (March, 23 - 26, 2003), at University of Tokyo. - [22] May, 28, 2003,
*A new construction of C^*-algebras from C^*-correspondences*, in The 23rd Annual Great Plains Operator Theory Symposium (May 28 - June 1, 2003) at University of Illinois, Urbana-Champaign, USA. - [23] October, 9, 2003,
*On scaling elements*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [24] October, 18, 2003,
*What should crossed products be?*, in West Coast Operator Algebra Symposium (October 16 - 18, 2003), at Banff International Research Station, Banff, Canada. - [25] October, 30, 2003,
*On C^*-algebras associated with C^*-correspondences*, in Operator Algebras Seminar, at Purdue University, West Lafayette, USA. - [26] November, 1, 2003,
*Dynamical systems and C^*-algebras*, in Wabash Modern Analysis Miniconference (November 1 - 2, 2003), at Indiana University-Purdue University Indianapolis, USA. - [27] November, 11, 2003,
*Orbit structure of topological correspondences*, in Analysis seminar at University of Oregon, Eugene, USA. - [28] December, 13, 2003,
*On C^*-algebras associated with C^*-correspondences*, in Kansai operator algebras seminar at Kochi University. - [29] January, 21, 2004,
*C*-algebras generated by scaling elements*, in Kyoto Operator algebras seminar at Kyoto University. - [30] April, 26, 2004,
*C*-algebras generated by scaling elements*, in Monday Analysis Seminar at Hokkaido University. - [31] May, 20, 2004,
*Cocycles of graphs and crossed products*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [32] May, 29, 2004,
*C*-algebras generated by scaling elements*, in GPOTS 2004 (May 26 - May 30, 2004), at Texas A&M University, USA. - [33] June, 4, 2004,
*Topological graphs*, in Graph Algebras: Operator Algebras We Can See (May 31 - June 4, 2004), at the University of Iowa, USA. - [34] June, 10, 2004,
*Scaling elements and topological graphs*, in Mathematics Colloquium, at the University of Iowa, USA. - [35] June, 16, 21, 28, July, 7, 14, 2004,
*C^*-algebras of topological graphs*, in Operator Algebras Seminar, at Hokkaido University. - [36] August, 6, 2004,
*Dynamical systems and operator algebras*, in Special seminar, at Hokkaido University. - [37] September, 3, 2004,
*Non-separable AF algebras*, in Abel Symposium 2004 (September 3 - 5, 2004), at Voksenasen, Oslo, Norway. - [38] September, 10, 2004,
*A construction of simple purely infinite C*-algebras*, in Operator algebra seminar, at University of Southern Denmark, Odense, Denmark. - [39] September, 15, 2004,
*Topological graphs and their C*-algebras*, in Operator Algebra Seminar, at University of Copenhagen, Denmark. - [40] September, 20, 2004,
*Topological graphs and their C*-algebras*, in Mathematical Society of Japan 2004 Autumn Meeting (September 19 - 22, 2004), at Hokkaido University. - [41] October, 31, 2004,
*Quasidiagonality of quotients of homeomorphism C^*-algebras*, in The structure of amenable systems (October 30 - November 4, 2004), at Banff International Research Station, Banff, Canada. - [42] November, 12, 2004,
*An AF-algebra which is prime but not primitive*, in Analysis seminar, at University of Nevada, Reno, USA. - [43] November, 13, 2004,
*Ideal structure of C^*-algebras of SGDSs*, in Groupoid Fest 2004 (November, 13 - 14, 2004) at University of Nevada, Reno, USA. - [44] January, 24 - 26, 2005,
*Construction of C^*-algebras*, in Recent development of classification problems in the Operator Algebras (January 24 - 26, 2005) at RIMS, Kyoto University. - [45] May, 31, 2005,
*A construction of Kirchberg algebras*, in Operator Algebras Seminar, at Hokkaido University. - [46] June, 9, 2005,
*A construction of all classifiable Kirchberg algebras by using topological graphs*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [47] September, 9, 2005,
*Graph algebras*, in 40th Functional Analysis meeting (September 9 - 11, 2005) at Kyoto Seminar House. - [48] September, 21, 2005,
*Topological graph algebras and groupoids*, in Mathematical Society of Japan 2005 Autumn Meeting (September 19 - 22, 2005), at Okayama University. - [49] October, 24, 2005,
*Pure infiniteness of C^*-algebras of topological graphs*, in Operator Algebra and Ergodic Theory Seminar, at Kyushu University. - [50] November, 10, 2005,
*A method to prove a given C^*-algebra is purely infinite*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [51] November, 15, 2005,
*Generators and relations of Kirchberg algebras*, in Operator Theory Operator Algebra Symposium (November 13 - 15, 2005), at Wel Sunpia Okayama. - [52] February, 13, 2006,
*Dynamical systems and operator algebras*, in The 2nd COE Conference for Young Researchers (February 13 - 16, 2006), at Hokkaido University. - [53] April, 13, 2006,
*A construction of finite group actions on Kirchberg algebras*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [54] April, 19, 2006,
*Actions of cyclic groups on Kirchberg algebras*, in Operator Algebras and Applications (April 19 - 23, 2006), at University of Southern Denmark, Odense, Denmark. - [55] May, 10,17,24, 2006,
*Constructions of Kirchberg algebras and actions on them*, in Operator Algebras Seminar, at Hokkaido University. - [56] May, 29, 2006,
*Permutation presentations of modules over finite groups*, in Group Theory Seminar, at Hokkaido University. - [57] September, 4, 2006,
*KK-theory and the UCT*, in 41st Functional Analysis meeting (September 4 - 5, 2006) at The Seminar House of the University of the Air. - [58] September, 21, 2006,
*Lifting of actions on K-groups of Kirchberg algebras*in Mathematical Society of Japan 2006 Autumn Meeting (September 19 - 22, 2006), at Osaka City University. - [59] September, 26, 2006,
*Topological dynamical systems, C*-algebras and topological graph algebras*in Rigidity School, Nagoya 2006 (September 25 - 29, 2006), at Nagoya University. - [60] October, 11, 2006,
*A lifting problem of actions on K-groups of Kirchberg algebras*in Operator algebra seminar at University of Copenhagen, Denmark. - [61] December, 4, 2006,
*Cuntz-Krieger algebras and factor maps between topological graphs*in Operator methods in fractal analysis, wavelets and dynamical systems (December 2 - 7, 2006), at Banff International Research Station, Banff, Canada. - [62] December, 13, 2006,
*Central sequence algebras of purely infinite simple C^*-algebras*, in Operator Algebras Seminar, at Hokkaido University. - [63] December, 18, 2006,
*Problems on group modules coming from actions on C^*-algebras*in Group Theory and Related Topics (December 18 - 21, 2006), at Kyodaikaikan. - [64] March, 6, 2007,
*Quasi-free actions on graph algebras*in Operator algebra seminar, at Chiba University. - [65] April, 19, 2007,
*Graph algebras, Exel-Laca algebras and ultragraph algebras*, in operator algebra seminars at University of Tokyo, at University of Tokyo. - [66] May, 28, 30, 31, 2007,
*Dynamical systems and operator algebras*, in COE Seminar at University of Tokyo. - [67] June, 14, 2007,
*A lifting problem of actions on K-groups of Kirchberg algebras*in C*-Algebras and Their Invariants (June, 11 - 15, 2007), at Centre de Recerca Matematica, Universitat Autonoma de Barcelona, Spain. - [68] September, 29, 2007,
*A lifting problem of actions on K-groups of Kirchberg algebras*, in The Fifth East Coast Operator Algebras Symposium (September 29 - 30, 2007), at Wellesley College, U.S.A. - [69] October, 12, 2007,
*Classification of uniformly outer actions of Z^2 on UHF algebras*, in the Carleton-Ottawa joint analysis, at University of Ottawa, Canada. - [70] November, 16, 2007,
*Generic automorphisms of approximately divisible AF algebras satisfy the Rohlin property*, in Workshop on Structure of C*-Algebras (November, 12- 16, 2007), at Fields Institute, Toronto, Canada. - [71] November, 29, 2007,
*The Evans-Kishimoto intertwining argument*, in Operator Algebra Seminars, at Fields Institute, Toronto, Canada. - [72] January, 14, 2008,
*A lifting problem of actions on K-groups of Kirchberg algebras*, in Operator Algebra Seminars, at University of Toronto, Canada. - [73] January, 21, 2008,
*Examples of locally finite dimensional C*-algebras which are not approximately finite dimensional*, in Operator Algebra Seminars, at University of Toronto, Canada. - [74] January, 29, 2008,
*Warped crossed products*, in C*-Algebras Associated to Discrete and Dynamical Systems (January, 27 - February 1, 2008), at Banff International Research Station, Canada. - [75] February, 14, 2008,
*Cocycle crossed products*, in Operator Algebra Seminars, at Fields Institute, Toronto, Canada. - [76] February, 28, 2008,
*Nonseparable UHF algebras*, in Operator Algebra Seminars, at Fields Institute, Toronto, Canada. - [77] May, 8, 2008,
*Non-separable UHF algebras*, in operator algebra seminars at University of Tokyo. - [78] May, 12, 2008,
*Construction of C*-algebras from dynamical systems*, in Geometry Seminar at Keio University. - [79] June, 19, 2008,
*Graph algebras, Exel-Laca algebras and ultragraph algebras*, in KOTAC 2008 (June, 19 - 21, 2008), at Seoul National University, Seoul, Korea. - [80] July, 23, 2008,
*Markov shifts, directed graphs and singly generated dynamical systems*, in Operator Structures and Dynamical Systems (July, 21 - 25, 2008), at Lorentz Center, Leiden, Netherlands. - [81] August, 6, 2008,
*Applications of topological graph C*-algebra*, in The 47th Real Analysis and Functional Analysis Joint Symposium (August, 6 - 8, 2008), at Keio University. - [82] September, 1, 2008,
*An Introduction to Operator Algebras*, in Colloquium at Ehime University. - [83] September, 11,12, 2008,
*Non-separable UHF algebras I, II*, in Problems in Theory of Operator Algebras (September, 10 - 12, 2008) at RIMS, Kyoto University. - [84] November, 5, 2008,
*An Introduction to C*-algebras*, in Colloquium at Tokyo University of Science. - [85] February, 18, 2009,
*Warped crossed products and noncommutative spheres*, in International Workshop on Noncommutative Geometry and Physics, 2009 (February 18 -- 21, 2009) at Keio University. - [86] March, 28, 2009,
*On Dixmierfs problem*, in Annual Meeting of Mathematical Society of Japan, at University of Tokyo. - [87] June, 16, 2009,
*Warped crossed products*, in Operator algebras and applications (June 14 -- 17, 2009) at University of Copenhagen, Denmark. - [88] June, 24, 2009,
*C*-algebras associated with C*-correspondences*, in Operator Algebra Special Session AMC-2009 (June 23 -- 25, 2009) at Putra World Trade Centre, Kuala Lumpur Malaysia. - [89] November, 19, 2009,
*Operator algebras and dynamical systems*, in 2009 Keio-Yonsei Research Conference (November 19 -- 20, 2009) at Yonsei University, Seoul. - [90] May, 20, 2010,
*Finite presentations of Kirchberg algebras*, in Workshop on Semiprojectivity and Asymptotic Morphisms (May 17 -- 21, 2010) at University of Copenhagen. - [91] June, 9, 2010,
*The Rohlin property of automorphisms of AF algebras*, in operator algebra seminar at University of Copenhagen. - [92] July, 5, 6, 8, 2010,
*The basics, Ideal structures, and K-theory of Cuntz-Pimsner algebras*, in Master Class on Cuntz-Pimsner Algebras: Applications and generalizations. (July 5 -- 9, 2010) at University of Copenhagen. - [93] September, 10, 2010,
*Approximate divisibility and the Rokhlin property for non-unital C*-algebras*, in LMS Midlands Regional Meeting and Workshop on C*-algebras (September 6 -- 10, 2010) at University of Nottingham, UK. - [94] September, 23, 2010,
*Semiprojectivity of graph algebras*, in operator algebra seminar at University of Southern Denmark. - [95] January, 28, 2011,
*Semiprojectivity of graph algebras*, in operator algebra seminars at University of Tokyo. - [96] February, 9, 2011,
*Semiprojectivity of unital graph algebras*, in Weekly seminar of Research Programme on The Cuntz Semigroup and the Classification of C*-Algebras at Centre de Recerca Matematica, Barcelona. - [97] March, 30, 2011,
*Application of graph algebras to problems on semiprojectivity*, in Baby NCG seminar at University of Copenhagen. - [98] April, 6, 2011,
*Application of graph algebras to problems on semiprojectivity*, in operator algebra seminar at University of Oslo. - [99] April, 9, 2011,
*Application of graph algebras to problems on semiprojectivity*, in operator algebra seminar at Norwegian University of Science and Technology, Trondheim. - [100] June, 7, 2011,
*Towards the classification of Cuntz-Krieger algebras and graph algebras*, in Conference on Structure and Classification of C*-Algebras (June 6 -- 10, 2011), at Centre de Recerca Matematica, Barcelona, Spain. - [101] June, 15, 2011,
*A new invariant of graph algebras using semigroups.*, in operator algebra seminar at University of Copenhagen. - [102] August, 17, 2011,
*Shape theories of commutative and non-commutative spaces*, in SYM Lecture at University of Copenhagen. - [103] September, 8, 2011,
*Semiprojectivity in non-simple C*-algebras*, in Conference on C*-Algebras and Related Topics (September 5 -- 9, 2011), at RIMS, Kyoto University. - [104] Octorber, 7, 2011,
*Towards the classification of non-simple C*-algebras of real rank zero*, in operator algebra seminars at University of Tokyo. - [105] March, 22, 2012,
*Classification of purely infinite graph algebras with finitely many ideals*, in 2012 Operator Algebra Program at East China Normal University, Shanghai. - [105] May, 30, 2012,
*Classification of purely infinite C*-algebras with finitely many ideals*, in GPOTS 2012 (May 30 -- June 3, 2012), at the University of Houston, Texas. - [106] September, 4, 2012,
*Problems on non-simple semiprojective C*-algebras*, in Workshop on Semiprojective C*-Algebras (September 2 -- 6, 2012), at University of Copenhagen. - [107] November, 24, 2012,
*Characterization of Cuntz-Krieger algebras*, in Operator Theory Operator Algebra Symposium (November 23 -- 25, 2012), at Osaka Kyoiku University. - [108] May, 12, 2013,
*Classification of C*-algebras with finitely many ideals*, in Workshop on Operator Algebras (May 10 -- 12, 2013), at University of Tokyo. - [109] September, 12, 2016,
*Warped crossed products and their applications*, in Recent Developments in Operator Algebras (September 12 -- 14, 2016), at RIMS, Kyoto University.

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