What are some other resources which might be useful for somebody considering asking a MathOverflow question, especially if their question is not quite a perfect fit here?

In asking this, I have several categories of resources in mind, including but not limited to:

  1. Both online and offline resources; both resources on the Stack Exchange Network and from elsewhere. (E.g. Wikipedia, Zentralblatt.)

  2. Resources for answering questions about mathematics which fall outside of MathOverflow's scope because they are not "research-level". (E.g. Mathematics Stack Exchange.)

  3. Resources for answering questions related to mathematics which are best answered by different communities with non-mathematical expertise. (E.g. Academia Stack Exchange or Computer Science Stack Exchange.)

  4. Other mathematical communities whose expertise may be complementary to that of the community here. (E.g. various discipline-specific mailing lists and discussion boards, or databases such as OEIS.)

  5. Resources for answering questions about MathOverflow or about the Stack Exchange network (e.g. MathOverflow meta or meta stack exchange).

As I've stated it, it sounds like I'm asking for an unimaginably comprehensive list of resources for questions related to mathematics — obviously it would be nigh-impossible to actually compile an authoritative answer to the question as I've framed it. But there's a loophole, in that so far as possible I'd like to address each of these categories of mathematical resources via a meta-category of resources, namely:

  1. Meta-resources: Lists compiled elsewhere on the internet which themselves compile lists of resources of the above types. (E.g. Collecting math websites is an example of a list of mathematics websites compiled on Mathematics Stack Exchange. Useful mathematical fora is another, focused on mathematics forums.)

6 Answers 6


Other mathematical communities include https://math.codidact.com/ and Reddit:

https://old.reddit.com/r/combinatorics/ https://old.reddit.com/r/DifferentialEquations/
https://old.reddit.com/r/probabilitytheory/ https://old.reddit.com/r/puremathematics/


https://old.reddit.com/r/AskStatistics/ https://old.reddit.com/r/datascience/ https://old.reddit.com/r/econometrics
https://old.reddit.com/r/MathStats/ https://old.reddit.com/r/StatisticsZone/ https://old.reddit.com/r/TheoreticalStatistics/

Here are a few of other places (from Math Stack Exchange Meta) to find places to talk about math online in a more discussion-based format:

  • $\begingroup$ I was really expecting to find a list of mathematical databases and a list of mathematical mailing lists on the AMS website, but I could not find either. I do hope that some of the mathematical communities on collaboration platforms mentioned above might become more openly discoverable somehow. $\endgroup$
    – Tim Campion Mod
    May 10 at 6:32

Various math-related databases

For example, databases of various mathematical objects.

The website Catalogue of Mathematical Datasets has a very impressive collection of various databases.

At least some databases are listed here:

Some related posts here on MathOverflow and on Mathematics Stack Exchange:

  1. If your question is about mathematics, but not research-level mathematics, then you can find some great alternative resources at the following MathOverflow Meta question:

  1. Meta questions.
  1. Not purely mathematical questions:
  1. Reference tools.
  • 2
    $\begingroup$ The links ought to be annotated. For example, what is the gist of each of those sites (in this context)? What is their use (in this context)? What do they contain (notable in this context)? What are some limitations, gotchas, or caveats? $\endgroup$ May 12 at 18:45

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