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The first author or presenting author is usually a researcher who carried out the research work.

The responsibilities of the first authors are doing the research, preparing the manuscript, and analyzing the data.

The corresponding author is normally a senior author who provides intellectual input and monitor the entire research work.

The responsibilities of the corresponding author are manuscript correction, proofreading, paper submission, handling the revisions, and re-submission of revised manuscripts till the journal production process

The main author is the person who owns the project or did the most work. They may or may not be the first author. The corresponding author is simply the one that interacts with a journal as regards publishing the paper.

A corresponding author usually accompanies the first author in the writing or submission process. Every first author can be considered as the main author but not the main authors are the first ones though. It depends on responsibility distribution and idea ownership.

Usually, the first author is the author whose names comes first in the order of authors, the Main author is one who contributes more to the article and most of the time he will be the first author and the corresponding author is the author who does all correspond with a journal and most of the time he will also be the first author.

Usually, the first author will get more credibility towards the paper, but order sometimes doesn't justify the work was done that's why now top journals are coming up with author credit statement which shows how much each author worked for the article.

Thank you so much for the valuable answer; it clear my doubt, I want to know the marks distribution between the authors in the hiring process (50:50 & 40:30:30). how to decide to divide the credits of research articles Ganesha K S Ibrahim Niftiyev Owolabi Emmanuel Sokefun Anton Vrdoljak

The corresponding author is the one e journal communicate to on all issues concerning the article. He can be the first author or co-author.

The publication points are shared equally. For example if you publish a paper with your supervisors the points are going to be distributed equally.

The rank of the journal also counts. If you publish in a Q3 Journal that is a Scopus journal, each person all be allocated 18points. If you publish alone you get 30points.