new-tag A new tag differential-inequalities was created. The tag-info is empty.

Motivated by YCor's use of the "tag-removed" tag for this question, I idly started looking through the questions tagged "tag-removed".

I noticed that there are very few questions whose only tag is "tag-removed", even though from the tag description it sounds like the primary use of the tag is when the question is so off-topic that no actual tags apply. Am I correct in guessing that the reason I see so few questions solely tagged "tag-removed", is that a question so off-topic is likely to be deleted?

You can see for yourself that there are not many questions solely tagged "tag-removed".

@YCor I don't know much about it, but I have the impression that continuum theory is viewed by general topologists as a distinctive branch of their subject -- so maybe group theory is to algebra as continuum theory is to general topology. Of course, that makes it much more niche, and can lead to misunderstandings for folks just learning basic properties of intervals.

I found a historical overview here.

In particular, to a general topologist, there are a lot more continua than just intervals.

@TimCampion Actually I see no point in using tag-removed when it's not the only tag. It seems the questions which have this tag as non-unique tag and are not closed/deleted were automatically retagged, possibly by moderators (who e.g., deleted some tag automatically). These are mostly old questions. The main current use it to remove some absurd tag to highly off-topic questions, which are usually quickly deleted.

@TimCampion I think that many off-topic questions which were retagged with tag-removed were eventually deleted. SEDE returns 1265 questions: data.stackexchange.com/mathoverflow/query/883845/…