The new tags "number" and "theory" were created at the same time tagging the same question leading me to believe that they are meant to be "number-theory". They do not contribute anything as tags so removing them may be a good idea.
1 Answer
Useless, duplicate, or misspelled tags are created often, and should be removed from questions. Users with 2K rep interested in having a somewhat sane tag system may want to look at the list of new tags regularly and deal with miscreations such as
- number created 1 hour ago
- theroy created 1 hour ago
- differantiability created 5 hours ago
- solve-problem created yesterday
- statistical created yesterday
- ....
Just remove such things from questions, replacing them with appropriate tags. Having no questions left, a tag dies within 24 hours.
If you are unsure if the tag is useful or not, begin discussion on Meta, for example in Tag cleanup 2014.
[I dealt with those listed above, except differantiability was already gone by the time I saw it.]
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3$\begingroup$ I wonder what could be a sane tag in place of solve-problem ;) $\endgroup$ Sep 25, 2014 at 16:00
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1$\begingroup$ (differantiability) was a typo I made when retagging this question, I managed to remove it during grace period. I avoided the question with (solve-problem) tag since I did not want to put it into review queue by a trivial edit. I have also removed (number) from two questions yesterday, so I am surprised that it reappeared that quickly. $\endgroup$ Sep 25, 2014 at 16:41
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3$\begingroup$ @MartinSleziak Tag and title edits do not put a question into Reopen queue; source. $\endgroup$– user147263Sep 25, 2014 at 16:57
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1$\begingroup$ @DanielFischer In the specific case, nothing; but in general, problem-solving exists. $\endgroup$– user147263Sep 25, 2014 at 19:01