On the dimension of motivic cyclotomic multiple zeta values, The 4th International Workshop on Multiple Zeta Values and Related Fields, 2025.7.14 (slide)
On the dimension of motivic cyclotomic multiple zeta values, Waseda Number Theory Seminar, 2025.7.4
On the ℤ-module spanned by multiple zeta values, Kyoto University Math Colloquium, 2025.6.11
On the multitangent functions, The third Oita number theory, 2025.1.25
On the confluence relations, Yufuin Algebraic Geometry Workshop, 2024.12.27
Cyclotomic multiple zeta values of level 2^n or 3^n, 2nd Kindai Workshop (Multiple Zeta Values and Modular Forms), 2024.11.9
On the discretization of the integral expression of multiple polylogarithms, Multiple Zeta Workshop, 2024.8.7
On multiple zeta star values of infinite depth, Analytic Number Theory Seminar II, 2024.1.20
On the motivic Galois groups and cyclotomic multiple zeta values,
RIMS Conference `Algebraic Number Theory and Related Topics', 2023.12.14.
Iterated Integrals along Loops and Cyclic Sum Formula,
Polylogarithms, Cluster Algebras, and Scattering Amplitudes, 2023.9.14.
Motivic Galois groups and Euler sums , Japan-Taiwan Joint Conference on Number Theory 2023, 2023.8.24.
On a Yamamoto's integral expression for Schur multiple zeta values, 17th multiple zeta workshop, 2023.2.21
Euler sums and cyclotomic associators, Automorphic Forms and Number Theory, 2023.1.11
Eulerian multiple zeta values and block shuffle relation, Mathematical colloquium at Kanazawa University, 2022.6.8
Double L-values and modular forms of general level , Various Aspects of Multiple ZetaValues, 2022.5.18.
On the dimension of multiple L-values, 16th multiple zeta work shop, 2022.2.22.
On the multiple L-values of level 2^n, Kyushu University multiple zeta seminar, 2021.11.22.
Iterated integrals, motivic Galois groups, and cyclotomic associators , The 66th Algebra Symposium, 2021.9.3.
Ohno relation for shuffle regularized multiple zeta values, Friday Tea Time Zoom Seminar, 2021.4.16.
Cyclotomic associators and motivic multiple L-values,The 52th Kansai multiple zeta, 2020.12.5.
The motivic Galois group and alternating multiple zeta values, Japan Europe Number Theory Exchange Seminar, 2020.11.24.
Stuffle product formulas for various iterated integrals, The 14th multiple zeta work shop, 2020.11.5.
Confluence relations for alternating multiple zeta values, The 13th multiple zeta work shop, 2020.2.16.
Motivic Galois group over Z[1/2] and linear relations among motivic alternating multiple zeta values, Japan-Taiwan joint workshop on multiple zeta values, 2020.2.9.
Generalized double zeta values and modular forms, RIMS Conference `Algebraic Number Theory and Related Topics', 2019.12.10.
Multivariable generalizations of Zhao's generalized 2-1 formula and Zagier's 2-3-2 formula, The 13th Fukuoka Number Theory Workshop, 2019.8.7.
Alternating multiple zeta values and their bases, The 18th Hiroshima Sendai Number Theory, 2019.7.9.
Multiple zeta values and modular forms for certain congruence subgroups, The 12th Young Mathematicians Conference on Zeta Functions, 2019.2.17.
Multiple zeta values and iterated integrals, The 139th Regular Meeting of the Kyushu Branch of Mathematics Society in Japan, 2018.10.20.
Iterated Integrals and Refinements of Symmetric Multiple Zeta Values, Taiwan-Japan Joint Workshop on Multiple Zeta Values, 2018.8.2.
Generalization of Zagier's 2-3-2 formula of multiple zeta values, Ehime University Algebra Seminar, 2018.7.20.
Block shuffle identity for multiple zeta values, Number Theory Workshop at Waseda University 2018, 2018.3.14.
On a certain class of linear relations among the multiple zeta values, The 11th Young Mathematicians Conference on Zeta Functions, 2018.2.21.
Iterated integrals and symmetrized multiple zeta values, MZV Days at HIM, 2018.1.30.
Confluence relations of multiple zeta values, HIM Workshop "Periods and Regulators", 2018.1.19.
On the Charlton's conjecture and its generalization for multiple zeta values, The 38th Kansai Multiple Zeta Conference, 2017.12.9.
On a certain class of linear relations among the multiple zeta values arising from the theory of iterated integrals, 3rd Japanese-German Number Theory Workshop, 2017.11.22.
A generalized cyclic sum formula for iterated integrals, Polylogs, multiple zetas, and related topics, 2017.11.11.
On the Charlton's conjecture and its generalization for multiple zeta values, Kyushu University Algebra Seminar, 2017.10.20.
Enhanced regulators and p-adic L-functions, Regulators in Niseko 2017, 2017.9.5.
On certain identities among the multiple zeta values, The 11th Fukuoka Number Theory Conference, 2017.8.10.
On Gross’s refined class number formula and enhanced Stickelberger elements, The 16th Hirosima-Sendai Number Theory Conference, 2017.7.12.
On the Gross's refined class number formula, p-adic arithmetic geometry and its surroundings seminar at Kyoto, 2017.4.25.
A certain combinatorial module inspired by the Goncharov coproduct, Various Aspects of Multiple Zeta Values, 2016.7.12.
Shintani zeta functions and Gross conjecture, RIMS Conference. `Algebraic Number Theory and Related Topics', 2015.11.30.
On the enhancement of Stark conjecture, Zagier conjecture, and Gross conjecture about special values of complex and p-adic L-functions of number fields, Number Theory and Geometry Seminar, 2015.11.
On the refinement of Rubin-Stark conjecture, Number Theory Joint Seminar at Kyoto University, 2015.6.19.
Conjectural construction of Rubin-Stark elements by Shintani method and generalization of Dasgupta’s conjecture to the higher rank case, Osaka University Number theory and Automorphic Form Seminar, 2015.5.15.
The partial derivatives of abelian L-functions at s=0 and refinement of Stark conjecture, Japan-Korea Joint Seminar on Number Theory and Related Topics 2014, 2014.11.19.
On the normalized Shintani L-functions and Hecke L-functions of totally real number fields, Kobe University Algebra Seminar, 2014.10.23.
On the theory of fans and its application to Shintani L-function and Hecke L-function, Number Theory Workshop at Waseda University 2014, 2014.3.13.
On the normalized Shintani L-functions and Hecke L-functions of totally real number fields, RIMS Conference `Automorphic Forms and Related Zeta Functions', 2014.1.20.
On the construction of Hecke L-functions by the normalized Shintani L-functions, Kyoto University Number Theory Seminar, 2013.10.25.
On the Shintani L-function 2, 27th Automorphic Forms Workshop, 2013.3.12.
Shintani L-function２, The 6th workshop on multiple zeta, 2013.2.23.
On the functional equation of Shintani L-functions, RIMS Conference `Automorphic Forms and Automorphic L-functions', 2012.1.18.