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12:29 AM
@MartinSleziak I am not sure where I was looking - the still exists. Still probably not for long unless it is added to another question or the tag-info is created.
> I've implemented a routine that removes tags created more than 6 months ago which have been used only a single time. It will run monthly.
12:43 AM
A new tag was created just now, but almost immediately replaced by (thanks to Arun Debray): mathoverflow.net/posts/313014/revisions
As far as I can tell, this is the first time the tag with this name was created: data.stackexchange.com/mathoverflow/query/851136/… and data.stackexchange.com/math/query/883845/…
10 hours later…
10:41 AM
A: Help cleanup tags!

YCorThe tag boolean-rings is rigorously equivalent to the more used boolean-algebras. I suggest to create a synonym.

In case it helps, here are the relevant queries: data.stackexchange.com/mathoverflow/query/910476/… and data.stackexchange.com/mathoverflow/query/883845/… (The first one currently returns no result, but there should be some after the data in SEDE are updated next Monday.)
10:58 AM
The tag is now empty.
1 hour later…
12:02 PM
This question has been bumped recently: Why is “P vs. NP” necessarily relevant? I have to say I am not really sure what could be chosen here as the top-level tag.
Anyway, probably at least adding the tag seems like a reasonable thing to do - so I'll probably do at least that. But perhaps it makes sense to let the question sit for a while, so that other users looking at it notice that the most recent activity was adding a new answer. mathoverflow.net/review/first-posts/105590 mathoverflow.net/review/late-answers/105591
Q: Why is "P vs. NP" necessarily relevant?

Andreas ThomI want to start out by giving two examples: 1) Graham's problem is to decide whether a given edge-coloring (with two colors) of the complete graph on vertices $\lbrace-1,+1\rbrace^n$ contains a planar $K_4$ colored with just one color. Graham's result is that such a $K_4$ exists provided $n$ is ...

3 hours later…
3:21 PM
Q: Duality between coalgebras and (pseudocompact) algebras - uniqueness

Julian KuelshammerThe following result is well-known. It can for example be found in [Iovanov: The representation theory of profinite algebras, Theorem 1.0.2]. For definitions, see below. Let $k$ be a field. The following are equivalent for a $k$-algebra $A$: $A$ is pseudocompact, $A$ is profinite, ...

1 hour later…
4:22 PM
Would the tag be a good fit for What is an upper limit of relative size of conjugacy class of the transitive finite group? (Or more genrally - can be actually useful on MO? Or should it be removed? At the moment there is one question with the tag.)

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