3:37 AM
@amWhy It's been edited, but no better than before. Anyway it seems you accidentally forgot to close-vote?

3 hours later…
6:58 AM
[ SmokeDetector | MS ] Link at beginning of body (43): Transformiation of irregular n-gon to regular n-gon through pure construction by Visakh on math.SE

2 hours later…

3 hours later…
11:53 AM
@CalvinKhor, that letter seems like a human without head, and make me feel stressed. — Vitalie Ghelbert 3 hours ago

1 hour later…
12:56 PM
D, there is a linked question with a very low score, but we have to delete this first.

1 hour later…
2:23 PM
@TheSimpliFire $\varphi$ looks like a phallus, which clearly demonstrates that mathematics is run by the patriarchy. We should use the much more feminine $\omega$ for the so-called "Golden Ratio" instead.

2:46 PM
The number of very low-score posts is currently enjoyable small.

3:44 PM
@JoséCarlosSantos Please focus on questions, not users.

@JoséCarlosSantos: how do you write that "close" button thing? It looks stylish.

[tag:close] renders as

Ah thanks @XanderHenderson. I will use it as and when needed.

4:58 PM
D1, D2, D3.
D4, D5, D6.
D7, D8, D9.
C1, C2, C3.
C4, C5, C6.
C7, C8, C9.

5:43 PM
Handled the big list @user21820!

6:21 PM
@ParamanandSingh Like all the D's are deleted?
@XanderHenderson But I find the level of contrast between the dark grey background with black print, in sufficient, and hence, prefer to write what absolutely contrasts with the background.

@amWhy: gave a delete on meta question as well as on all those in list of user21820

@ParamanandSingh Gracias (Thank you!)
I went through all the D's and it seems @JoséCarlosSantos sealed the fate with a third delete vote.

7:04 PM
@amWhy An alternative is [meta-tag:close] which renders as

@MartinR: the contrast for this close button is better on my android device.

7:24 PM
I am out of closing votes. Can you please close this question as a duplicate of this one?

8:05 PM
Are you sure you got the right target and duplicate?
Just because the target question happens to be about a set that satisfies the "dupe's requirements", but is not in anyway, the same question, the initial question should be designated a dupe of an altogether different question, @JoséCarlosSantos?

9:05 PM
I do see the "target" you linked as helpful and related, but nothing there explicitly says "this subset of $\mathbb Q$ is both open and closed."