About the Authors

Xin Wang

Affiliation Key Laboratory of Systems and Control, Institute of Systems Science, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, China

Jing Han

hanjing@amss.ac.cn

Affiliation Key Laboratory of Systems and Control, Institute of Systems Science, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, China

Huawei Han

Affiliation Key Laboratory of Systems and Control, Institute of Systems Science, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: XW JH. Performed the experiments: XW. Analyzed the data: XW JH. Wrote the paper: XW JH. Contributed mathematical proof: XW HH.