For example, the tag has the following helpful explanation:

Questions on the use of the methods of real/complex analysis in the study of number theory.

Hopefully someone who misunderstands what analytic number theory is would be dissuaded from using that tag on a question that would more properly be tagged number-theory or elementary-number-theory.

But for , there is no such explanatory text. I imagine that I don't have a high enough reputation score to add such an explanatory text, but even if I do, I'm not exactly sure what a regular expression in mathematics is. The term makes me think of Perl, RegEx and Javascript.

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    $\begingroup$ Looking at it, it should probably be a synonym with regular-language, but I haven't got the tag score to suggest that synonym. $\endgroup$ – Milo Brandt Mar 31 '15 at 1:18
  • $\begingroup$ A tag wiki summary has now been added. I agree with Meelo--it should be merged with regular-language. $\endgroup$ – apnorton Mar 31 '15 at 4:59
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    $\begingroup$ Since there seems to be support for it, I have suggested the synonym here. $\endgroup$ – Bart Michels Mar 31 '15 at 7:37
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    $\begingroup$ I saw a use of this tag today, still had no description, and I was pretty sure the tag was being misused. $\endgroup$ – Alan Sep 6 '15 at 9:15

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