# Duplicate “Possible Duplicate” box

Amusingly, the question Is there a subfield F of the complex field with [C:F]=3?, which was closed as a duplicate, has two "Possible Duplicate" boxes, each indicating the same question as the possible duplicate (namely, What is the condition for a field to make the degree of its algebraic closure over it infinite?). Is this a bug of some sort? Obviously it's not a pressing matter, but I thought it should be brought to someone's attention.

• Oh the irony... :-D – Asaf Karagila Apr 10 '11 at 17:23
• If you look at the edit history, there are two edits by the community user with the description "insert possible duplicate link", one at 16:11 and one at 16:53. Since Qiaochu left a comment at 16:10, I presume he closed the question right after leaving that comment, reopened it afterwards and closed the question again at 16:53. – t.b. Apr 10 '11 at 17:31
• I guess I don't have enough rep to see the edit history you're referring to (the bottom of the question where that would usually be looks blank to me) - but that sounds like a plausible explanation. – Zev Chonoles Apr 10 '11 at 17:48
• @Zev: Have a gander. – J. M. isn't a mathematician Apr 10 '11 at 18:33
• @J.M., thanks! I guess that doesn't appear as a "standard" edit history because the edits were made by the community user. Is there a link to that page from somewhere on the question, or did you have to know to add "/revisions" to the end of the URL? – Zev Chonoles Apr 10 '11 at 19:20
• I think, if I remember correctly, that when something is closed as duplicate, and then re-opened, the automatically inserted link is not automatically removed? – Willie Wong Apr 10 '11 at 19:51
• @Zev: I have to say Theo's comment gave me the idea that adding the /revisions part works even on "unedited" stuff... – J. M. isn't a mathematician Apr 11 '11 at 1:47
• @Zev: My answer to another question is related: meta.math.stackexchange.com/questions/1773/… You can always view the revision history as J.M. says, but the direct link only appears after non-Community edits. (A similar trick works on MathOverflow, e.g., mathoverflow.net/revisions/7233/list, as mentioned in tip 5 at mathoverflow.net/tips .) – Jonas Meyer Apr 11 '11 at 19:13