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Authors
Guan, Qi’an
Li, Gan
Yuan, Zheng
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Article History
Received: 14 February 2025
Accepted: 27 August 2025
First Online: 15 November 2025
Ethics
: Conflict of Interest Qi’an GUAN is a member of Editorial Board of Frontiers of Mathematics and was not involved in the editorial review or the decision to publish this article. The authors declare no conflict of interest.
