There's a question about Fourier series on physics.SE that seems purely mathematical in nature - at least, it's definitely off-topic on the physics site, and seems like it would be on topic here. But the topic might already covered by other existing questions, e.g. this one and this one. So I figured I'd ask:

  1. Would this question from physics.SE be appropriate at math.SE?

  2. If not, should I migrate it anyway and flag it to be closed here?

  • 1
    $\begingroup$ Dear David, the question is on topic, but extremely vague. $\endgroup$ – Akhil Mathew Feb 18 '11 at 23:35
  • $\begingroup$ @Akhil: yeah, that's what I thought too. Does that affect whether it should be migrated? $\endgroup$ – David Z Feb 18 '11 at 23:49

The only reason not to migrate, assuming the essential rule of "is it on-topic for the target site?" has been decided:

If the question is of very low quality, do not migrate it.

This is effectively like throwing trash on your neighbor's front lawn. Be a good neighbor! :)


Without looking at any of the linked questions, supposing that there is a question on some other site that is off topic there and a more appropriate fit here, even if it would end up closed as a duplicate, it's worth migrating. The migration creates the cross-link from the original question to the migrated question here; the closed-as-duplicate creates a link from the migrated version here to the pre-existing question that covers the same content. In all that, the original off-topic question ends up connected to an existing question with (hopefully) an appropriate answer.


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