This came to my attention when I saw a tag wiki had been proposed. It appears we have a mathematics tag on ELL, which has only two questions. The proposed tag wiki is:
For questions about mathematics in English
I suppose that's a fair enough description of the tag, but I'm not certain the tag is necessary. Of the two questions tagged mathematics, one is a borderline-proofreading question which would be answered just as well if it had nothing to do with mathematics. The other is a word-request for the names of symbols that are used in math, but I don't know that the tag is beneficial.
So, thoughts? Personally I'd like to blacklist the tag, but 1) would like the community's opinion and 2) don't even think we can do that until we graduate ;) At the very least we can remove it from the questions and agree not to use it, though, should there be community consensus.