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*On magic square C*-algebras*, in Kyoto Operator Algebra Seminar, at Kyoto University. - [112] April, 25, 2017,
*Unitary representations of locally compact groups, and magic square C*-algebras*, in Keio Geometry Seminar, at Keio University. - [113] June, 27, 2017,
*Noncommutative topology and quantum groups*, in Boston University/Keio University Workshop 2017, at Boston University. - [114] December, 26, 2018,
*Classification theory of C*-algebras using K-theory*, in Danwakai, at Keio University. - [115] June, 12, 2019,
*K-theory of magic square C*-algebras*, in Special Week on Operator Algebras 2019 (June 10 - 14, 2019), at East China Normal University. - [116] December, 7, 2019,
*On magic square C*-algebras of size 4*, in Workshop on Operator theory and Operator algebras 2019 (December 6 - 8, 2019), at Kanagawa University. - [117] February, 18, 2020,
*Symbolic dynamical systems and C*-algebras*, in Algebraic system, Logic, Language and Related Areas in Computer Science II (February 17 - 19, 2020), at RIMS, Kyoto University.

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