Assistant Professor at Kyoto University

Research Interest : Operator algebras, K-theory, Homotopy groups

e-mail  staro[@]educ.kumamoto-u.ac.jp    (please change [@] to @)

CV

March 2019 Master of Science Graduate School of Science, Kyoto University

April  2019～ In Ph. D course at Graduate School of Science, Kyoto University (supervisor : Prof.  Masaki Izumi)

April 2021～ JSPS Postdoc at Tokyo University (surpervisor : Prof. Yasuyuki Kawahigashi)

April 2023～ 2025 Assistant Professor at Kyoto University

Oct. 2025～ Kumamoto Univ. 

Papers and preprints

1.  The homotopy groups of the automorphism groups of Cuntz-Toeplitz algebras,  J. Math. Soc. Japan, (2020) . arXiv:1903.02796 

2.  The group structure of the homotopy set whose target is the automorphism group of the Cuntz algebra,  (Joint Work with Prof.  Masaki Izumi),  International Jornal  of Mathematics, Vol. 30, No. 11, (2019) .  arXiv:1903.04809 

3.  A topological invariant for continuous fields of Cuntz algebras.  arXiv:2002.06807  Math. Annalen. (2020) 

4.  A topological invariant for continuous fields of Cuntz algebras II.  arXiv:2010.00758 Proc. Amer. Math. Soc. 150(2022), 1059-1070

5. The Reciprocal Kirchberg Algebras. arXiv:2204.11199  Journal of Functional Analysis. (2024) , https://doi.org/10.1016/j.jfa.2024.110395

6. Spanier-Whitehead  K-duality and Duality of Extensions of C*-algebras. (Joint Work with Prof. Ulrich Pennig ) arXiv:2403.20081

7. On the homotopy groups of the automorphism groups of Cuntz-Krieger algebras, (Joint Work with Prof. Kengo Matsumoto) arXiv:2404.06115 

Talks

・The homotopy groups of the automorphism groups of Cuntz-Toeplitz algebras,  Kyoto Operator Algebra Seminar @ Kyoto,  January 2019

・The homotopy groups of the automorphism groups of Cuntz-Toeplitz algebras, MSJ  Autumn meeting @Kanazawa, September 2019

・The homotopy groups of the automorphism groups of Cuntz-Toeplitz algebras,  Recent developments in operator algebras　RIMS @ Kyoto, September 2019

・The homotopy groups of the automorphism groups of Cuntz-Toeplitz algebras,  Quantum analysis seminar @Nagoya, October 2019

・The homotopy groups of the automorphism groups of Cuntz-Toeplitz algebras,  Operator algebras seminar @Tokyo Univ,  November 2019

・A topological invariant for continuous fields of Cuntz algebras,  Recent developments in operator algebras　RIMS@Kyoto,  January 2020

・A topological invariant for continuous fields of  Cuntz algebras, GAPT Seminar@Cardiff, March 2020

・The bundles of Cuntz algebras, Workshop on Operator Theory and Operator Algebras (Zoom),  November 2020

・The bundles of Cuntz algebras, RIMS Workshop on Operator algebras and Quantum dynamics (Zoom), February 2021

・On Dadarlat-Pennig's theory, Workshop for Young Researchers in functional analysis@Kyoto, August 2022

・The Reciprocal Kirchberg Algebras, Quantum analysis seminar @Nagoya,   October 2022

・The Reciprocal Kirchberg Algebras, GAPT seminar@Cardiff,  December 2022

・The Reciprocal Kirchberg Algebras, KOAS@Kyoto, January 2023

・The bundles of C*-algebras and the duality of KK-theory, KOAS@Kyoto, April 2023

・The Reciprocal Kirchberg algebras, OAS Workshop in Issac Newton Institute@Cambridge, July 2023

・The Spanier--Whitehead duality for KK-groups and its applications,  RIMS　Recent developments in operator algebras@Kyoto,  January 2024

・Spanier--Whitehead duality and its application  to a duality of extensions of C*-algebras,  GAPT Seminar@Cardiff, February 2024