About the Authors

Jung Eun Kim

Contributed equally to this work with: Jung Eun Kim, Hyojung Lee

Affiliation Department of Mathematical Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea

Hyojung Lee

Contributed equally to this work with: Jung Eun Kim, Hyojung Lee

Affiliation Department of Mathematical Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea

Chang Hyeong Lee

chlee@unist.ac.kr (CL); sunmilee@khu.ac.kr (SL)

Affiliation Department of Mathematical Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea

Sunmi Lee

chlee@unist.ac.kr (CL); sunmilee@khu.ac.kr (SL)

Affiliations Department of Applied Mathematics, Kyung Hee University, Yongin, Republic of Korea, Institute of Natural Sciences, Kyung Hee University, Yongin, Republic of Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: SL CL. Formal analysis: JK HL CL SL. Methodology: SL JK HL. Software: JK HL. Validation: SL CL. Writing – original draft: JK HL SL. Writing – review & editing: JK HL SL CL.