In the paper, each author will be marked with a number, generally increasing from 1. If there are multiple authors in a paper, each author will have a corresponding number in the paper to mark their footnote information.
In the footnote of the paper, the author's number will correspond to their detailed information, including the author's unit, professional title, contact information and so on. This information helps readers to better understand the author's background and research direction, and also helps readers to better understand the content of the paper.
In short, the number in the upper right corner of the author's name is used to mark the footnote number of the author in the paper, which can provide detailed information of the author and help readers better understand the content of the paper.