I would like to re-ask a particular unanswered question on math.stackexchange. Is it OK to do so? Or should I ask for migration?

The meta discussions here and here seem to recommend "normally no, unless you have some good reasons to do so (and if you cross-link the questions)".

I believe I have good reasons, as the topic touches both computer science (in this case regular grammars) and math (asymptotic analysis) and is unanswered, yet I would still rather get a recommendation before I get on peoples' nerves.


2 Answers 2


I think three days is not a long time for a question that

  1. has to be seen by an expert and
  2. is likely to require some research and/or thought,

especially since these days have been weekdays all.

We can migrate up to 60 days. I recommend you wait for a week or two. If no (satisfying) answer has come up until then, we can migrate or you repost and add an answer here later.

I'd prefer the latter option because I think the question is a good addition to this site.

Update: The question went unanswered for a while. Since it's too late to migrate now, it's been reposted to cstheory.SE.

  • 1
    $\begingroup$ I have added a bounty in order to draw attention to the nice question. $\endgroup$
    – Raphael
    Oct 17, 2013 at 14:30
  • $\begingroup$ OK. Thanks for adding the bounty. $\endgroup$
    – john_leo
    Oct 17, 2013 at 20:43

That question is firmly on-topic here. Nonetheless, since it's gone unanswered and you're willing, we might migrate it away if you think it has a better chance of getting a reply elsewhere. Wouldn't Theoretical Computer Science be a better fit though? I can migrate to either Math or TCS, but I'd like a third opinion from someone more familiar than us with these sites before doing so.

  • $\begingroup$ A migration to Theoretical Computer Science might also be appropriate, yes. I understand that you prefer migration over re-posting, that's fine with me. $\endgroup$
    – john_leo
    Oct 17, 2013 at 13:15

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