What is expected in a Thesis Abstract, on a math job application? I'll be finishing my PhD in May, so I'm applying for jobs. I have my application materials prepared and have been sending them out. Occasionally an application demands something I don't already have prepared, leaving me to decide if it's worth creating that extra item to apply for that job.

As far as I can tell, a thesis abstract is basically like the introductory portion of the research statement, which I already have prepared. If I was asked for a thesis abstract instead of a research statement, I would chop down the latter to create the former.

The problem is, there is a job I'm very interested in that asks for both. I'm not sure how to interpret this. What are they expecting?
The few times I was asked for such a thing, I literally copy-pasted the abstract for my thesis into a document and submitted it. mathjobs doesn't want to tell me which jobs asked for it back when I applied so I'm not sure (I got two postdoc offers that round but I'm pretty sure those places didn't ask for a thesis abstract). No one emailed me to tell me that I'd done it wrong though. Usually there is a contact person listed in each mathjobs ad that you could contact to ask for details, but if say the deadline is tonight I would recommend just copy-pasting the thesis abstract, or making up a thesis abstract if your thesis doesn't exist yet.

In principle though, the introduction to your research statement and your thesis abstract can be (but isn't always) quite distinct (my thesis was a subset of my research statement). A research statement should have at least something to say about where you envision your research going, but a thesis abstract is mostly limited to the contents of your thesis.