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There are currently 7 questions that have the [functions] tag.

Is this a tag we want to keep? Would anyone ever want to highlight or ignore all questions tagged [functions], or subscribe to its RSS feed so that they can be quickly notified of new questions about functions?
When you see a question tagged [functions], under what circumstances could that give you any additional information about the question?
What other reasons might there be for wanting to keep [functions] as a tag?

If we don't want a [functions] tag, is there some other tag that it makes sense to set as a synonym? (So that all functions questions would automatically be tagged as this instead?)

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    $\begingroup$ what would be its function? $\endgroup$ – BBischof Aug 25 '10 at 6:59
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Tag functions looks useless to me — let's just delete it. As for the last question in the list, maybe we should use something like functional-equation.

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    $\begingroup$ +1 Agreed. Such a tag is far too vague and could refer to anything. $\endgroup$ – Akhil Mathew Aug 24 '10 at 14:06
  • $\begingroup$ This was my thought as well. I mostly wanted to see if anyone disagreed and thought it could be useful. $\endgroup$ – Larry Wang Aug 25 '10 at 0:01
  • $\begingroup$ The tag "functions" may be useful for grouping results on functions that are not functional equations, e.g. Γ(x+y)>=Γ(x)+Γ(y) for x,y>=2 [math.stackexchange.com/questions/3305/… (but I am not quite sure on what a functional-equation tag would include). $\endgroup$ – Américo Tavares Aug 25 '10 at 21:10
  • $\begingroup$ In the meantime there are over 500 question tagged functions. I think that the tagged should be kept, but it should be clarified when it is appropriate and when not - see meta.math.stackexchange.com/questions/3323/about-functions-tag $\endgroup$ – Martin Sleziak Dec 9 '11 at 14:26

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