Why is the tag (analysis) useful?

Title plus what's below.

The tag's wiki is:

Mathematical Analysis generally, including Real Analysis, Harmonic Analysis, Complex Variable Theory, the Calculus of Variations, Measure Theory, and Non-Standard Analysis.

Given that all , , , , and are all existing and commonly used tags, I claim that should either be deprecated or have its wiki adjusted.

• Older discussion (duplicate?): meta.math.stackexchange.com/questions/4968/… – Martin Sleziak Jul 7 '14 at 12:29
• It seems like a duplicate, yes. However my question is two years younger. A lot (in the community) has changed. Hopefully my duplicate question will revive the discussion. I don't find t.b.'s arguments convincing. The (general-topology) and (probability) tags do not brake up in a set of covering sub tags (I'm not sure about this because I don't enough about neither of these fields, maybe someone can confirm or disprove this). – Git Gud Jul 7 '14 at 12:52
• But even if there is such a cover, at best this shows that either those tags also need to be deprecated or that none should be deprecated at all. It doesn't justify the non-deprecation. I agree that the algebra-precalc/algebra analogy isn't fitting here. But I never argued that it was. And come to think about it, (abstract-algebra) seems to suffer from the same problem as (analysis). – Git Gud Jul 7 '14 at 12:53
• One use of the tag I did not mention: MathOverflow tag ca.analysis-and-odes maps to it, which helps migrations go through. – user147263 Jul 9 '14 at 4:44