Zeng, Ding-fang
Funding for this research was provided by:
National Natural Science Foundation of China (11875082)
Article History
Received: 21 December 2023
Accepted: 14 March 2024
First Online: 8 April 2024
Code availability
: My manuscript has no associated code/software. [Author’s comment: All the curves in Sect. InternalRef removed and InternalRef removed is generated from a Mathematica program and is available from the authors upon request.]