For deletion: 1, 2, 3.

@XanderHenderson I guess it's “copacetic”.

Ah... "copacetic" is pretty slangy, I guess. In that context, it means something like "okay with" or "fine with"; maybe "sanguine" would have a similar meaning in that context?

@XanderHenderson Now I learned a new word, too :)

Has copacetic really lost that much traction?

I feel old. :(

Possible duplicates: Proof: $f(z)$ is constant and Proof: complex exponential inequality

@XanderHenderson @amWhy: This is yet another misleading post; the natural interpretation of that equation system notation is as a conjunction, which is simply wrong.

@user21820 I think in that case a comment pointing out the problematic notation is the way to go. If that is fixed, the answer isn't bad. (Not awesome either)

@AlexFrancisco In cases like 1, it's generally not necessary to spend delete votes, they'll be roomba'd a couple of days later.

@DanielFischer Good to know that since I've never read through all the help pages.

@DanielFischer Thanks for adding your comment! I was disinclined to do so because that post tells people to "take close note" but is in the first place not even a good explanation. Oh well...

HNQ PSQ.

[ SmokeDetector | MS ] Bad keyword in answer, bad keyword with email in answer: convex optimisation - geometric problems by Patricia Campbell on math.SE

@user21820 now gone

1, 2, 3

4, 5, 6, 7

11, 12

PSQ.

Oh, baby! I have a 7th delete vote! WATCH ME GO MAD WITH POWAH!

@JohnMa 7 has earned my wrath!