I received my degree in Mathematics last year and spent my last semester working on my master's thesis. The topic was of interest to a private company, so I joined a project (4 months) partially funded by them. The final thesis that I presented to my university was purely mathematical, I had no sensitive information of any kind. The thesis included many different topics and it was far from being anything publishable at that state.
After I graduated, I was very interested in continuing with the company. They declined despite my insistence, as they were not satisfied with the project's results. After that, we never talked again and everybody moved on with their lives.
Following my graduation, I continued pursuing one of the topics (again purely mathematical) discussed in the project. I ended up working with other researchers who published a related article in the past, and who were eager to unite efforts. Fast forward 10 months, we managed to get a decent article.
I contacted one of the guys from the firm and showed it to him recently, as I wanted him to recommend me for a graduate application. Thought of this as proof of my hard work, as a proof that I am somebody worth endorsing.
Quite the contrary, he began saying many offensive things. Among them that I (and even the coauthors, he dared to say) will get banned for life in publishing for renowned journals, as I was violating an NDA that I signed. The only way for him not to pursue it would be if he appears as a coauthor (even mentioned bringing another guy from the company as another author). He basically treated me as somebody unethical who published stolen ideas.
Trying to think about it as objective as I can, I can come up with the following arguments:
His points:
- Between the thesis and the newer article, there is one common topic.
- On that specific topic, some ideas were born during the project time.
My points:
- Again, I don't work with any sensitive information of any kind. So it's not like I am publishing any company's secrets or anything close to that.
- Sure, they introduced me to the topics, but I consider the contributions (corresponding to the overlapping topic) mine. Because the end of the project (and thesis' deadline for submission) was approaching, we didn't have time to discuss them. I presented these ideas in the final draft and when they reviewed it they didn't find any gaps in my arguments. After this we never talked about them again.
- The article is extensive, most of it are ideas that were the fruit of correspondence with the coauthors. Also, even on that repeated topic, the proofs are different and formally prooves statements that were posed as mere conjectures in the final draft.
- Work is my master's thesis, so I am sure anyone from the university can read it. So as a former alumnus, why a citation is not sufficient?
- In the acknowledgments section of the article, I recognized the support of the company.
Just pisses me off that they gave up on the project but I did not. It would be very unfair that after all this subsequent effort, that they appear as equal contributors. Nobody reached out to me ever again, and now when we have something, they want to take credit. And besides, how could I bring up these new co-authors out of thin air to the actual ones? They are of course, unaware of this.
Despite my emotions, in the end I just want to do the right thing. I frankly do not know anybody who could advise me on this and hence I am posting it here. What is the best way to proceed in this case?