I'm currently writing my PhD dissertation and I need to fill out the statement of declaration page. This page declares my contribution to my published papers, which are coauthored with my supervisor and a postdoc. I am the first author of those papers, but I'm in the field of high-energy physics theory so the naming convention in those papers is alphabetical. There is no required format from my university regarding this page.
I'm wondering if it is ok to mention that the said people coauthored those papers but I am the first author. I'm asking this question since I do not want to write something that may look awkward or proud in a sense, that would appear to be weird. Does anyone know if it is normal to declare yourself as the first author on the declaration page?