Should all the questions need to be asked in English? I saw a question which was not in English and some other languages I did not reckon and I think not many would reckon that too. I did not see any rule that questions should be asked in English, so should I flag such questions in future or should I leave it for those who understand that language to answer for them? My natural instinct says that if such thing is allowed then this site will get very difficult to use due to the diversity of languages. Please enlighten me in this regard?
As Gerry Myerson links to, posting questions in another language is not against site rules here, and the majority opinion (at the time that thread was opened) was to allow such questions. This is yet another way in which math.SE differs from the majority of the other SE sites.
However, such questions should have an English translation appended to them, and to me the reason is twofold:
- this will ensure that the greatest number of users possible can contribute to answering these questions; and
- it should prevent math.SE from becoming a cluster of linguistic ghettos, with French speakers asking and receiving answers only in French, and likewise for Persian, Hindi, Russian, etc.
As for flagging: this isn't necessarily a bad idea. Just don't flag with the connotation that the question itself should be closed and/or deleted. It may be easier for the ♦-mods to convince other users to contribute to the translation of such questions.