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7:38 AM
@MartinSleziak The tag was removed by the OP. The question is still missing a top-level tag (and perhaps some other suitable tags can be chosen).
 
 
6 hours later…
2:08 PM
@MartinSleziak, thanks for your suggestion. I'm sorry. I'm new here and I'm not familar with it. Now I have removed this tag but I'm still not sure what other tags should I use :) — Yachy 2 mins ago
 
2:20 PM
@Yachy Some tags which I would consider as a possible candidates are (mg.metric-geometry), (convex-geometry) or (sumsets). But I do not consider myself familiar with this are well enough to be able to judge which tags are actually suitable. In any case, if we want to discuss the choice of tags further, perhaps we could continue in chat rather than here in comments. — Martin Sleziak 48 secs ago
 
2:42 PM
Only now I realized, that the user in question does not have enough reputation to talk in chat. So my invitation to chat was a bit pointless.
In any case, as the tags have been edited, my comments concerning tags are probably no longer needed.
 

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