11:08 AM
Oct 14 at 18:15: The original question was posted and closed: mathoverflow.net/posts/343812/revisions
Oct 17 at 07:43: The "density version" was posted: mathoverflow.net/posts/344011/revisions mathoverflow.net/posts/344011/timeline
Oct 17 at 16:26: I have answered the "density version", but the answer in fact answers the original (stronger) version.
Oct 18 at 09:50: The original question was reponed: mathoverflow.net/posts/343812/revisions mathoverflow.net/posts/343812/timeline
So now there are two questions which ask basically the same think. (One of them contains both the original version - which was edited in by YCor - and the density version.)
I would be tempted to vote to close as a duplicate, but since I was involved in the question as an answerer, I decided to ask for advice first.
@DominicvanderZypen I've copied the question here to the other thread. I suggest you delete this one since it doesn't need to be in 2 threads. (For memory, the question was initially downvoted and closed because the sum was not specified to be from $-N$ to $+N$, so the convergence was obviously impossible). — YCor 12 hours ago
Of course, a separate issue is whether (either version of) this question would be more suitable for Mathematics than for MathOverflow.
11:52 AM
4 hours later…
3:53 PM
@MartinSleziak In case of a merging, there are a lot of comments to the original question (343812) which are obsolete now, due to the unclear way the question was originally asked. Actually I think that only part of Tir's comment (who provides a published slightly related link) is worth pasting. Of course this can be done manually in case Question 343812 is closed.
Moderators know this probably better, but on the sites where questions are merged, typically the mods also clean up the comments.
As you said, merging would possibly preserve some useful comments. (And also it would move the answers to the original question.)
As I said above, a separate question is whether this question should be on MO at all. (And whether it would be more suitable for Mathematics.)
@YCor Since this is the first time I've met you in chat - and since you are the most active editor on the site - I'll mention that there is also the room called MO editors' lounge.
It was started long ago by quid and when both quid and Ricardo Andrade were on the site, it was relatively active.
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