Would it make sense to merge the tag and into ? It doesn't seem useful to have to search for each of these separately.

  • $\begingroup$ I think the small tag projective-plane (only 4) should very likely be removed (maby synonym or merge into projective-geometry) For the two other larger ones, I do not know. $\endgroup$
    – user9072
    Sep 9, 2013 at 10:34
  • 3
    $\begingroup$ I think both should be merged. However, I think some of the questions tagged with projective-space could benefit from a weighted-projective-space tag. $\endgroup$
    – S. Carnahan Mod
    Sep 9, 2013 at 14:52
  • 2
    $\begingroup$ There are non-Desarguesian projective planes, and the projective space tag would not always be appropriate for these. So having both tags is useful. (Potentially at least, since very few questions on this topic have been posed.) $\endgroup$ Sep 11, 2013 at 12:50
  • $\begingroup$ @Godsil: um, but I'd like to keep only [projective-geometry], not space. $\endgroup$ Sep 11, 2013 at 18:47
  • 1
    $\begingroup$ I am only arguing that there are grounds for keeping the projective-plane tag. It seems very reasonable to drop the projective-space tag in favour of the projective-geometry tag. $\endgroup$ Sep 12, 2013 at 0:12
  • $\begingroup$ @Godsil: ok, but in that case could projective-plane be a sub-tag of projective-geometry? Or does the 5-tag limit stop that? $\endgroup$ Sep 12, 2013 at 6:36
  • $\begingroup$ I know nothing about 5-tag limits. The sub-tag issue itself could be argued both ways. To be consistent I would have to say that it should not be a sub-tag, but consistency is over-rated. $\endgroup$ Sep 13, 2013 at 0:52
  • $\begingroup$ @ChrisGodsil does what you say apply to any of the questions currently tagged (there are only four so you might check) projective-plane. I think (but could be wrong) it does not. So, the point seems somewhat moot. Since if there is no tag-wiki (which is true) there is hardly any notion of 'having a tag' or not. Put differently, do you see an issue with these four questions being retagged projective-geometry? $\endgroup$
    – user9072
    Sep 14, 2013 at 17:50
  • $\begingroup$ I do not see any issue with retagging those four questions. $\endgroup$ Sep 14, 2013 at 19:09


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