Proposal: Postgrad Mathematics
MathOverflow's primary goal is for users to ask and answer research level math questions, the sorts of questions you come across when you're writing or reading articles or graduate level books. Of course, individual questions don't have to be worthy of an article, and they don't have to be about new mathematics. A typical example is, "Can this hypothesis in that theorem be relaxed in this way?"
Mathematics - Stack Exchange is for people studying mathematics at any level and professionals in related fields. We welcome questions about:
- Understanding mathematical concepts and theorems
- Hints on mathematical problems (but please read our FAQ about homework questions)
- History and development of mathematics
- Solving mathematical puzzles
- Software that mathematicians use
Before you ask, however, maybe you want to peruse our list of common math questions?
There are certain subjects that, while still being on-topic here, you can get better response on our sister sites:
- Research-level mathematics — Math Overflow
From my reading of these FAQs and looking at Cayley_graph wikipedia page, I would expect the only example question so far to be on topic on both sites and given the overlap between the two sites, I think this proposal would have trouble defining questions which aren't on topic on one of these sites, if not both.