Dealing with professor's death on my thesis My professer, regrettably and very suddenly, passed away yesterday. He was my mentor for my graduation thesis. His teaching capabilities were not great, but he was a great man. Always helping out with everything he could and very supportive. I have very fond memories of him.

I have to hand in my thesis in two weeks time. Currently, I have his and another mentor's name on the front page to make it clear they are my supervisors.

How should I proceed with his name? I'd prefer not to erase it from my thesis, as he helped me and supported me. Would it be appropriate to leave it? Is it appropriate to add a little symbol like a cross next to his name to mark his passing? Should I just leave it the way it is now?

If it matters, I'm from the Netherlands.
You should definitely keep the name. I've seen that people who passed away during some endeavor usually have their names surrounded with a rectangle.

You can also consider putting some In Memoriam page for your mentor somewhere at the beginning of the thesis. You should consult other people within your institutions culture to make sure that this doesn't come off as pretentious (although I see no reason why it should).