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Authors
Kohatsu-Higa, Arturo
Tamura, Yuma https://orcid.org/0009-0008-2759-4968
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Funding
Funding for this research was provided by:
Ritsumeikan University
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Article History
Received: 11 August 2025
Accepted: 24 September 2025
First Online: 7 October 2025
Declarations
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: This study is a theoretical work in mathematics; therefore, ethical standards are not applicable.
: The authors declare that they have no conflict of interest.
