I noticed by accident that the question Recurrence on partial orders [closed], asked by user948104 on Sep 11, has been closed and deleted. Along the question went also my answer, to which I had spent some effort.
From the content of the question and answer, honestly I see no reason for deleting them:
- The question is quite clear and meaningful. It received no upvotes but no downvotes either (net votes zero).
- My answer, as far as my judgment is relevant at all, is informative, friendly, contains pointers to literature, and directly answers the questions raised. It received one downvote (I have literally no idea why, but perhaps that is not my business).
Now my questions are: Looking at this record of deleted Q&A
- How can one get any information on why they were deleted? The record says nothing more than "This question does not meet Mathematics Stack Exchange guidelines." which says absolutely nothing about the reason. (There is, for example, no hint that the question was considered a duplicate, nor do I personally think it is a duplicate.)
- Is there any method for asking the question to be undeleted? I do not see any undelete button on it. If there was any visible method, I would not be posting here.
To be honest about it, I find this "no-visible-explanation-at-all" deletion perplexing, even downright rude, both towards the original asker and towards my efforts in answering it. Putting that aside, I see it as a disservice to other readers since the information provided in my answer has been taken out of view.