Tied for the first author, also known as "* * * and the first author". Generally, when labeling published papers and works, you need to explain the words "tied for the first author" and "equal contribution" and "same contribution", and then explain in detail the chapters and parts you are responsible for. In this way, there is no difference between evaluating professional titles and evaluating professional titles. In the case of cooperation between multiple authors, the name of the person who has made the greatest contribution to the work is usually signed first. The first author refers to the person whose signature ranks first. Some articles have two or more first authors, which are called tied first authors. In this case, it is generally necessary to indicate the name of the person. Extended data:

How people want to be the first author when browsing periodicals and evaluating professional titles. Because the first author has made the greatest contribution to innovative scientific research achievements. At the same time, the chain effect and effect are also the most. Of course, we should clarify the relationship with the correspondent, the second author and the third author, as well as the issue of the right of signature.