If I have a question unanswered in the MathOverflow for over three days, can I post it here to attract more attention? My question is: the (2,2,1) boundedness of a “product” operator.

It is in general hard to tell which website will be more useful for a particular question.

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    $\begingroup$ If you do, be sure to leave a link at each site to the question at the other site. $\endgroup$ – Gerry Myerson Dec 30 '14 at 7:19
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    $\begingroup$ You might have a look at older discussions about cross-posting. For example, this one or this one. $\endgroup$ – Martin Sleziak Dec 30 '14 at 8:32
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    $\begingroup$ My personal suggestion: Migrate, don't cross-post. Since the question is younger than 90 days, you can flag it on MO and have it moved here, rather than having a copy on both sites. $\endgroup$ – apnorton Dec 30 '14 at 14:19

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