I'm not sure what's going on with the tag. I recently tried to tag a question as block-matrix related through an edit, but when I did the tag didn't show up.

I can look up the (block-matrices) tag in the site's tags tab to find that there are currently 172 questions with this tag, but clicking on the tag itself redirects me to the list of questions tagged with (matrices). I tried to duplicate this event with defunct/burninated tags, but those don't show up in the search.

So what gives? What's going on here?

  • 3
    $\begingroup$ Sounds like something was synonymized. $\endgroup$
    – Asaf Karagila Mod
    Dec 8, 2016 at 15:43
  • 1
    $\begingroup$ I removed the synonym so now this isn't like this anymore for this tag, but there are similar ones where it could still happen. $\endgroup$
    – quid Mod
    Aug 25, 2018 at 23:56

1 Answer 1


The tag is a synonym of . See here for list of synonyms of matrices and here is list of all tag synonyms.

In practice that means that if you add the tag , it is automatically changed to .

For more details see: What are tag synonyms and merged tags? How do they work?

  • $\begingroup$ Aww. I was going to post this. But you beat me by a few seconds. $\endgroup$
    – Asaf Karagila Mod
    Dec 8, 2016 at 15:44
  • $\begingroup$ Perfect. Thanks, to both of you. $\endgroup$ Dec 8, 2016 at 15:45
  • $\begingroup$ Is this the desired behavior? Do we actually want it to be synonymized? Where was the original discussion of this? $\endgroup$
    – Nick Alger
    Dec 10, 2016 at 18:17
  • $\begingroup$ @NickAlger I do not recall such a discussion on meta and I was not able to find one. In the list of tag synonyms you can see that it was done not by a moderator but by voting of regular users. In fact, the users who proposed this particular synonym even got synonymizer badge - so I assume that the date when the badge was awarded is the same as the date when the synonym was approved. $\endgroup$ Dec 10, 2016 at 18:29
  • $\begingroup$ It is probably clear, but I will mention anyway that the question whether they should synonyms is different from the OPs questions. If there is need to discuss it, then it should be done elsewhere - either in the designated thread or as a separate question on meta. $\endgroup$ Dec 10, 2016 at 18:30

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .