Is this really what happened and if so, is this behaviour accepted on MSE?

Edit:

Now it seems the answer has been found. Is there anything that can be done about it? For example can the original question be undeleted?

• Was it possibly this answer instead? That question was deleted. – robjohn May 8 '15 at 11:53
• The deleted version. This is not ok. Reasking the same question with exact same wording is "never" ok IMO (for a suitable definition of never). The OP's answer stands at -2. – Jyrki Lahtonen May 8 '15 at 11:53
• @JonasMeyer Ok, should I flag for moderator attention? Or not in this case because I already asked a meta post? – ナウシカ May 8 '15 at 11:54
• @robjohn Possibly. But it says page not found. – ナウシカ May 8 '15 at 11:55
• You can flag the repeat question. Unless you have a link, it may be difficult for you to even locate the older version. Remember: only users with 10000+ rep can "see" deleted threads. Robjohn and I gave the link for the benefit of such users. – Jyrki Lahtonen May 8 '15 at 11:56
• @JyrkiLahtonen Yes, impossible for me to locate it. I will go and flag his new post... – ナウシカ May 8 '15 at 11:57
• @user213845: since two moderators are commenting here, you probably don't need to flag. – robjohn May 8 '15 at 11:57
• @robjohn Okay, I will not flag. – ナウシカ May 8 '15 at 11:57
• @robjohn Is it possible for you to undelete the previous question? – ナウシカ May 8 '15 at 12:04
• @JyrkiLahtonen I wanted to comment on your comment to the answer in the new question but don't have enough reputation... the result $\|A\|=2$ is correct. I believe he did notice that there are two norms. His answer is similar to mine although slightly more high level and less explicit. – ナウシカ May 8 '15 at 12:15
• Would moving user213845's answer to the undeleted question be a reasonable solution here? (At least solution with whih user213845 would be satisfied?) If yes, are moderators able to do such thing? (I know that mods can merge questions. I am not sure, if it is the case for deleted questions, too.) – Martin Sleziak May 8 '15 at 12:19
• @user213845: I have undeleted this answer temporarily. As soon as you copy it, I will delete it again. – robjohn May 8 '15 at 12:23
• @robjohn Thank you, I copy pasted it. – ナウシカ May 8 '15 at 12:30
• Sorry that I wasn't of much help in the end. I got distracted by the question. Mind you, I think $||A||=\sqrt2$ ;-) – Jyrki Lahtonen May 8 '15 at 13:51
• @justhalf: As in here? ;-) user213845's answer was copied there all right. They later realized the error, and self-deleted the answer (meaning that 10k+ users can still see it). – Jyrki Lahtonen May 15 '15 at 4:59