Does it exist? I was going to post a question on MathOverflow, but I felt incredibly guilty all of a sudden. Is cross-posting allowed?


closed as off-topic by Andrés E. Caicedo, Did, user147263, MJD, punctured dusk Apr 13 '15 at 20:33

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locked by Pedro Tamaroff Apr 14 '15 at 0:36

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  • 2
    $\begingroup$ Crossposting is discouraged. MO is for posts by research mathematicians about research-level mathematics. Unless you are a professional research mathematician, it is unlikely that your post will be on-topic for MO. $\endgroup$ – MJD Apr 13 '15 at 18:45
  • $\begingroup$ don 't you want to know what my question is? $\endgroup$ – JonMark Perry Apr 13 '15 at 18:47
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    $\begingroup$ No, I trust you to make the correct choice now that I have explained the criteria. $\endgroup$ – MJD Apr 13 '15 at 18:49
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    $\begingroup$ Also, to answer your question, I have not observed any rivalry between the two sites, which serve different purposes and largely (but not entirely) disjoint audiences. $\endgroup$ – MJD Apr 13 '15 at 19:10
  • $\begingroup$ Yes, not sure about the "friendly" bit though. ;-) $\endgroup$ – quid Apr 13 '15 at 19:38
  • $\begingroup$ this ones quite interesting - i think he is asking how many new AP's are formed when the n-th prime is added to the set.:mathoverflow.net/questions/104059/… $\endgroup$ – JonMark Perry Apr 13 '15 at 19:38
  • $\begingroup$ okay, ill tell you my question... $\endgroup$ – JonMark Perry Apr 13 '15 at 19:39
  • $\begingroup$ does x.x=x.x in a non-abelian field? $\endgroup$ – JonMark Perry Apr 13 '15 at 19:40
  • $\begingroup$ Did you mistype the question? The left and right are litterally the same, how could the be not equal? $\endgroup$ – quid Apr 13 '15 at 19:40
  • $\begingroup$ i was asking for a simple proof, the technical words might be rusty aswell $\endgroup$ – JonMark Perry Apr 13 '15 at 19:41
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    $\begingroup$ But RH and LH are the very same string. $\endgroup$ – quid Apr 13 '15 at 19:44
  • $\begingroup$ but the field is non-abelian $\endgroup$ – JonMark Perry Apr 13 '15 at 19:45
  • $\begingroup$ @Asaf I am not sure "cross posting" is meant in that sense. $\endgroup$ – quid Apr 13 '15 at 19:49
  • $\begingroup$ I wanted to vote as a duplicate of: meta.math.stackexchange.com/questions/16288/… but the silly closure dialog decided to take a different question as what I'd meant (admittedly, my fault). So I'm only linking this. $\endgroup$ – Asaf Karagila Apr 13 '15 at 19:49
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    $\begingroup$ true - i'm giving up on this one, i guess xx=xx after all, regardless of field $\endgroup$ – JonMark Perry Apr 13 '15 at 22:00

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