About the Authors
- Qiuye Xia
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Roles Conceptualization, Data curation, Formal analysis, Methodology, Writing – original draft, Writing – review & editing
Affiliation School of Mathematics and Statistics, Guizhou University, Guiyang, China
- Xiaoling Qiu
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Roles Funding acquisition, Investigation, Supervision, Writing – review & editing
* E-mail: xlqiu@gzu.edu.cn
Affiliation School of Mathematics and Statistics, Guizhou University, Guiyang, China
Competing Interests
The authors have declared that no competing interests exist.