Tagging - 2017-12-02

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Martin Sleziak

05:26

@quid Since we're talking tags, it is now about a week since your comment on gt6989b's post. Just a reminder - I am not sure whether we should wait for some kind of a reasponse a bit or whether the new tag can be created.

7 hours later…

Martin Sleziak

12:46

BTW John Ma's answer is now already at +7: Should we have a tag for the mean value property of harmonic functions?

3 hours later…

Martin Sleziak

15:24

Wow! The tag riesz-representation-theorem was created today and it already has 67 question.

Q: Prove or disprove that $φ_v:u\mapsto \langle\mathcal A u,v\rangle$ is in $V^*$

Let us consider a linear and continuous operator on a Hilbert space $V$, $\mathcal A:V\rightarrow V$, such that: $$\|\mathcal A u\|\leq M \|u\|, \ \ \forall u\in V, M>0$$ and now consider $\langle\mathcal A u,v\rangle, \ \ u,v\in V.$ We have: $$\langle\mathcal A u,v\rangle\leq \|\mathcal A u\| \...

Guy Fsone also created tag-excerpt and tag-wiki.

quid

@MartinSleziak thanks for the reminder; it's done.

Martin Sleziak

Ok, so now there is stieltjes-integral and we no longer have riemann-stieltjes-integral.

I guess that such stuff is to be judged on the case by case basis, but questions about RS-integral will be most often tagged both (riemann-integral) and (stieltjes-integral) right?

quid

Yes, I thought about keeping it as synonym but this would be confusing with the excerpt.

I mean the "Use with other tags as needed to specify Riemann–Stieltjes, Lebesgue–Stieltjes, etc. "

In another way it could be still confusing. I'll add a halfsentence

Martin Sleziak

I see, you have also added both tag-excerpt and tag-wiki.

quid

@MartinSleziak yes, I took what Toby proposed.

@MartinSleziak that's a bit strange, but maybe the tag itself is not too bad.

But I do not know that part well.

Martin Sleziak

15:41

Whether it is good tag or not, it is probably not ideal that somebody retags 50 question ni a few hours.

@Henry: No. I'm saying that if it turns out that the tag is not a good fit for whatever reason, it's easier and cleaner to remove the tag from two questions (or ideally from none, as discussion should take place prior to tagging any question), than it would be from 100+ questions. — Asaf Karagila Nov 20 at 22:17

Martin Sleziak

16:15

I think that Asaf's has a point. If the tag is not discussed on meta first, at least the tag-creator should leave some time for others to react if they see that somebody created a new tag which is - for some reason - problematic.

6 hours later…