1, the concept is different, generally there is only one first author, but many papers are based on some large-scale scientific research projects, so it is difficult to have one paper.

Individual completion is completed by a team or multiple units. In this case, it is * * * with the author.

2, the number is different, * * * has more than one author, and strictly speaking, there is only one first author.

3, the signature is different, * * * and the author's signature is a sensitive issue. * * * means that there are two or more authors in an article, and the two authors play equal roles and participate in the writing, experiment and publication of the article together. In this case, you can consider signing the same work, and only one first author can sign one.

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.

On the signature of innovative works, such as scientific research papers, patents, research reports, etc. The name of the person who has made the greatest contribution to the work is usually signed at the front. Especially for the signature of scientific research papers, each journal has more detailed regulations; However, when the paper signature is used to evaluate professional titles, the weight of the first author is obviously heavier than that of the second and third authors, but lighter than the personal signature.

Due to the complexity and diversity of scientific research, for example, hundreds of people sign a paper in bioinformatics. 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.

In addition, the first author is different from the correspondent and creative contribution, and the correspondent is often the most authoritative person in the field of papers.