Faculty Profiles - KOMURA Fuyuta

KOMURA Fuyuta

Scopus Paper Info

Total Paper Count: 7 Total Citation Count: 14 h-index: 2

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Affiliation

Faculty of Engineering Department of Basic Sciences

Job

Associate Professor

Degree

慶應義塾大学 - 博士（理学） 2021.09

Biography in Kyutech

2025.04

Kyushu Institute of Technology Faculty of Engineering Department of Basic Sciences Associate Professor

Papers

Weyl groups of groupoid C*-algebras Reviewed International journal

Fuyuta Komura

Journal of Functional Analysis 289 ( 12 ) 2025.12

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Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

In the theory of C*-algebras, the Weyl groups were defined for the Cuntz algebras and graph algebras by Cuntz and Conti et al. respectively. In this paper, we introduce and investigate the Weyl groups of groupoid C*-algebras as a natural generalization of the existing Weyl groups. Then we analyse several groups of automorphisms on groupoid C*-algebras. Finally, we apply our results to Cuntz algebras, graph algebras and C*-algebras associated with Deaconu–Renault systems.

DOI： 10.1016/j.jfa.2025.111166

DOI： 10.1016/j.jfa.2025.111166

Kyutacar

arXiv

Other Link： https://www.sciencedirect.com/science/article/pii/S0022123625003489
${}^{*}$-homomorphisms between groupoid $C^{*}$-algebras Reviewed International journal

Fuyuta Komura

Documenta Mathematica 31 ( 1 ) 197 - 221 2025.09

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Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.4171/dm/1043

DOI： doi.org/10.4171/dm/1043

Other Link： https://ems.press/journals/dm/articles/14299151
Submodules of normalisers in groupoid C∗-algebras and discrete group coactions Reviewed International journal

Komura F.

Forum Mathematicum 37 ( 1 ) 121 - 133 2025.01

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1515/forum-2023-0182

Kyutacar

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85185606230&origin=inward
A correspondence between inverse subsemigroups, open wide subgroupoids and cartan intermediate C∗-subalgebras Reviewed International journal

Komura F.

Proceedings of the Edinburgh Mathematical Society 65 ( 3 ) 861 - 879 2022.08

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1017/S0013091522000402

Kyutacar

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85141501331&origin=inward
INVARIANT SETS and NORMAL SUBGROUPOIDS of UNIVERSAL ÉTALE GROUPOIDS INDUCED by CONGRUENCES of INVERSE SEMIGROUPS Reviewed International journal

Komura F.

Journal of the Australian Mathematical Society 113 ( 1 ) 99 - 118 2022.08

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1017/S1446788721000021

Kyutacar

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85104556433&origin=inward
QUOTIENTS of ÉTALE GROUPOIDS and the ABELIANIZATIONS of GROUPOID C*-ALGEBRAS Reviewed International journal

Komura F.

Journal of the Australian Mathematical Society 111 ( 1 ) 56 - 75 2021.08

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Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

DOI： 10.1017/S1446788720000154

Kyutacar

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85083376932&origin=inward
Reproducing kernel hilbert C<sup>∗</sup>-module and kernel mean embeddings Reviewed International journal

Hashimoto Y., Ishikawa I., Ikeda M., Komura F., Katsura T., Kawahara Y.

Journal of Machine Learning Research 22 2021.01

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Language：English Publishing type：Research paper (scientific journal)

Kyutacar

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85121310556&origin=inward

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Conference Prsentations (Oral, Poster)

Weyl groups of groupoid C*-algebras

紅村冬大

作用素環論・エルゴード理論セミナー 2025.10

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Event date： 2025.10.17 Language：Japanese Country：Japan

Grants-in-Aid for Scientific Research

捩れ亜群C*環の対称性

Grant number：26K17000 2026.04 - 2031.03 若手研究