# Does advanced probability theory belong on stats or math stackexchange?

Obviously probability is discussed often on CrossValidated, as it's a solid foundation of both frequentest and Bayesian statistics.

However, when someone wants to ask a question concerned with more advanced probability theory, concerning filtrations/measures/stochastic calculus etc, should it be posted on math stackexchange instead?

At what point is a question concerning probability abstract enough that it is more appropriate on the math stackexchange instead of crossvalidated?

• It would be interesting to ask about basic probability, too, because there are lots of basic probability questions in both site (in MathematicsSE 49k questions tagged "probability" and 12k tagged "statistics", which seem like a duplication of sites). The same answer to this question could be valid for basic and advanced probability. – Pere Jul 13 '17 at 21:26
• If there's absolutely no relationship of the question to reality, then I'd consider math SE. – Aksakal Jul 21 '17 at 15:49
• I always think measure theory belongs on mathSE. Stochastic calculus could be either, in my view. The nice thing about statsSE is that all these sorts of questions are much closer to the core than at mathSE where probability etc is a bit of side-show to the main game. – wolfies Jul 24 '17 at 15:39

• it's a matter of judgement which you choose ... Some questions will get a better answer here, some there  //// Interesting choice of words. I would be interested if you could embellish on that... Are you suggesting that there are diifferences of style / norms between the two sites? ;) – wolfies Jul 24 '17 at 15:35