@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.
@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.
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?