Tagging - 2020-04-21

« first day (2870 days earlier) ← previous day next day → last day (1471 days later) »

6:14 AM

These queries should approximate list of tag creators. (It should show the first occurrence of the tag, but it does not find it if the question where the tag was created has already been deleted. At least for the recently created tags, most often this should be the user who created tag.)

Recently created tags: main, meta.

Most frequent tag-creators: main, meta.

Another tag-related information which might be interesting is looking at the edits in the tag-wikis/tag-excerpts.

Recent edits: main, meta.

Most frequent tag-info editors: main, meta.

Maybe for recently created tags I should have included also link to the post and the revision history: main, meta.

3 hours later…

Martin Sleziak

9:12 AM

new-tag A new tag differentiation-under-integral-sign was created by pi-π.

Q: Using differentiation under integral sign evaluate $\int_{0}^{\frac {\pi}{2}} \ln (\frac {a+b\sin x}{a-b\sin x}) \cdot \frac {dx}{\sin x} $

Using differentiation under integral sign evaluate $\int_{0}^{\frac {\pi}{2}} \ln (\frac {a+b\sin x}{a-b\sin x}) \cdot \frac {dx}{\sin x} $ My Attempt: Given $$\int_{0}^{\frac {\pi}{2}} \ln (\frac {a+b\sin x}{a-b\sin x}) \cdot \frac {dx}{\sin x}$$ Let, $$F(a)=\int_{0}^{\frac {\pi}{2}} \ln (\frac...

SEDE: data.stackexchange.com/math/query/927958/… data.stackexchange.com/math/query/883845/…

Queries which show also editors who added/removed the tag: data.stackexchange.com/math/query/1105163/… data.stackexchange.com/math/query/1038474/…

This user created the same tag on April 6, but the tag was removed and the question was later deleted: math.stackexchange.com/posts/3611031/revisions (That's why the question is not shown in the above queries.)

3 hours later…

Zacky

12:17 PM

Are all those queries supposed to return nothing?

Zacky

12:34 PM

@MartinSleziak Regarding the tag itself I believe it (or a variation of it's name) could have a big potential. I'm not really sure how are tags for "specific methods" viewed by others, but seeing how tags like Bayes theorem or the AM-GM inequality one behave I tend to believe this can be also useful.

Over the past two years I've seen a decent number of questions that could be tagged so. It comes most of the time under the name of "Leibniz rule", "Feynman's trick" or "differentiation under the integral sign" as synonyms.

Martin Sleziak

@Zacky They are supposed to return past instances and deleted questions with that tag.

So if the above question remains on the site, after the next update of SEDE three queries should return this question.

If it gets deleted, it depends. If the tag is not removed before the deletion, it will be shown in the query for deleted question.

Zacky

Of course it's not the end of the world if there isn't this tag, as it wasn't for the past ten years.

@MartinSleziak ah, okay.

Martin Sleziak

As I explained above, the query for deleted posts returns nothing because the tag was removed from the question which had it before the deletion.

Martin Sleziak

12:58 PM

Since you've mentioned it as an example, I think a.m.-g.m.-inequality is a bit problematic.

Should it be used only for questions about AM-GM inequality and the questions explicitly asking to use AM-GM inequality in the solution?

Or should it be used for any problem where AM-GM inequality can be used?

The latter interpretation leads to somewhat inconsistent usage. However, my impression is that many users use this tag in that way.

In any case, this tag was discussed a bit on meta, but without reaching any conclusion. It was also mentioned in this room a few times.

A: Tag management 2017

EDIT: Now there is question discussing tags for specific inequalities in general: Which (if any) inequalities with real numbers should have separate tags? The tag a.m.-g.m.-inequality has been created recently Is this really going to be useful? It seems a bit too specific to me. In any case, i...

Q: Which (if any) inequalities with real numbers should have separate tags?

There are certainly many inequalities which are rather important and useful and which appear frequently in various areas in mathematics (AM-GM, Jensen, Cauchy-Schwarz, etc.) The question I want to ask is whether some of them would be also useful as tags on this site. And if yes, for which of them...

discussion tagging

11 hours later…

Martin Sleziak

11:43 PM

@AloizioMacedo specific-question meta I wonder whether context should be added to the question: New changes to close reasons. (It is not specifically about context. OTOH return of missing context close reason is an important aspect.)

Q: New changes to close reasons

Not long ago, we had to adapt to the circumstances at hand regarding the changes to how close reasons were displayed. You can read more about this here. We now have other changes. A good place to read about it is here. To summarize: the “Off-topic” banner has been replaced with “A community-spe...