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7:01 AM
Just a reminder of . This tag was mentioned several times here in chat.
Apr 26 '18 at 11:44, by Todd Trimble
@MartinSleziak Yes, I support removal of for the reasons given by Dan Petersen.
Apr 26 '18 at 12:36, by Todd Trimble
@MartinSleziak I'll take a second look later, but on first look my inclination was just to remove it without merging into .
6
A: Help cleanup tags!

Dan PetersenI suggest deleting the tag decomposition-theorem. I would guess that the tag was intended to be about the decomposition theorem of Beilinson-Bernstein-Deligne-Gabber. It seems unnecessary to have a whole tag just dedicated to this theorem (perverse-sheaves should suffice). What's worse, most po...

 
 
1 hour later…
8:04 AM
Post which had this tag at some point: data.stackexchange.com/mathoverflow/query/927958/… SEDE did not find any deleted posts with this tag: data.stackexchange.com/math/query/883845/…
 
 
6 hours later…
2:21 PM
Out of 100k questions on MO, 77,858 have a top-level tag; 82,687 if we also count (linear-algebra), (graph-theory) and (set-theory).
So 22.16% of questions is missing a top-level tag, 17.21% if we take a less strict interpretation.
Here are the links which I used to get the above numbers: chat.stackexchange.com/transcript/10243/2018/10/27
 

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