@MartinSleziak I know that, and my flag is still pending now. I found it'll be responded after judgement. Thanks anyway.

math.stackexchange.com/questions/tagged/rational-roots

rational-roots was created at Feb 21 and has only 1 question right now, is "rational-roots" really desires a tag?

It seems that originally there were two questions in that tag: chat.stackexchange.com/transcript/3740/2019/2/22 - it was removed from one of them just now by YuiTo Cheng. SEDE: data.stackexchange.com/math/query/927958/… data.stackexchange.com/math/query/883845/…

Maybe the edit linked above means that @YuiToCheng wants to remove the tag, but so far he did only one of the two questions...?

@MartinSleziak I realized the tag is created by a 10K user when I was about to remove it from his question. Maybe it's bettter to have a discussion with him first?

That sound reasonable.

But at least I was right in my guess that you were thinking about removing the tag.

In any case, if the tag remains in the current status (single question, no tag-wiki), it will be removed in six months by a script.

When flagging as a duplicate, it shows [Math Processing Error] like this

After clicking and get into this question, it appears normally. It's not a big problem and doesn't affect much, I just wondering why this happens. I searched on meta but didn't find a satisfying answer :(

@Andrews I will just point out that this is not really tag related.

Perhaps we could try to stick mainly to the topic of this room in here.

Perhaps Math Meta Chat might be a suitable place for your question.

Although my guess is that it is unlikely that somebody will be able to give some reliable answer. (But I might be wrong about that.)

Sorry. I won't be off topic again.

BTW I suppose you have noticed that YuiTo Cheng was interested in the same tag as you. (See above.) I mean the rational-roots tag.

@MartinSleziak I waited a bit to see whether I get some feedback on this - eventually I have added at least supremum-and-infimum. math.stackexchange.com/posts/3173966/revisions

@MartinSleziak I just noticed tag rational-roots a little bit weird (only 1 question that time, no usage and wiki), not so interested in, though. If I decide to create a new tag, I'll add the new tag to several relevant questions in case of being deleted.

BTW hilbert-manifold and infinite-dimensional-manifold are suitable tags to me. (Former tag [hilbert-maniforld] has a typo)

Well, when creating a new tag, possibly it might be useful t discuss it on meta first. (Probably it depends on a situation.) But you probably know about it.

@Andrews I don't feel strongly about those too tags either way. For the benefit of others reading this I will add that they have been created a few days ago and later they were removed.

Possibly it would be more suitable to name them as plurals. (That's customary for tags.) Maybe by creating both those tags, we are closer to the situations of having too many very specific tags - which is not good. (So perhaps one of them would be enough.)

And sorry for the typo.

I did not find older post tagged hilbert-manifold(s): data.stackexchange.com/math/query/927958/… data.stackexchange.com/math/query/927958/…

The search for banach-manifold(s) comes empty, too: data.stackexchange.com/math/query/927958/… data.stackexchange.com/math/query/927958/…

Similarly, for infinite-dimensional-mainfold(s): data.stackexchange.com/math/query/927958/… data.stackexchange.com/math/query/927958/…

OK. I got that.