Last year, I completed my master's thesis, and my supervisor expressed interest in collaborating on a paper based on my work, with me as the second author. However, the paper was never published, and I recently discovered a poster based on my thesis that has been published without including my name (nor did I knew of that).
I understand that posters may not carry the same weight as papers, but I am uncertain about the appropriate course of action in this situation. Could anyone offer advice on whether I have any rights to address this matter with my supervisor and what steps I might consider taking?