We've previously had some discussion about the suitability of pure math questions for this site. Currently, pure math questions - by which I mean those that have no physics content, even if they arise in a physical context - are off topic. We migrate those to Mathematics. Here are some recent examples, mostly taken from the list of recently migrated questions:
(Most of the above examples were typically migrated after 5 off-topic votes from +3k users and moderators via the Math.SE migration path.)
Last time the topic was brought up on meta, the community seemed in favor of changing our scope to make pure math questions on topic. If we decide to go ahead with it, it would be an easy change. So I thought I'd put forth this formal proposal: shall we make pure math questions on topic?
Ideally, answers should offer:
- a set of criteria (the more precise, the better) for determining which pure math questions should be on topic for us. The extremes of the spectrum are "all math questions are on topic" (essentially absorbing math.SE's scope into our own - they wouldn't like that though) and "only questions which are about physics are on topic" which is what we have now; answers can suggest anything in between. This could form the basis of an faq meta question in the future, if necessary.
- an improved wording for the help center scope page that briefly summarizes what sorts of mathematical questions are on topic and which ones aren't
Vote up the answers you think are good, vote down those which you think are bad, and in either case comment to explain why. As always, reasoned arguments will carry more weight than vote counts.
When (or if) a consensus emerges, we will take it into account and act accordingly. (I'm being vague because I can't guarantee that our site scope will change to reflect the consensus here; we'll also have to come to an agreement with the math.SE community and the SE team.)