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 '13 at 10:34
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    $\begingroup$ 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 Sep 9 '13 at 14:52
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    $\begingroup$ 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.) $\endgroup$ – Chris Godsil Sep 11 '13 at 12:50
  • $\begingroup$ @Godsil: um, but I'd like to keep only [projective-geometry], not space. $\endgroup$ – Zsbán Ambrus Sep 11 '13 at 18:47
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    $\begingroup$ 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. $\endgroup$ – Chris Godsil Sep 12 '13 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? $\endgroup$ – Zsbán Ambrus Sep 12 '13 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. $\endgroup$ – Chris Godsil Sep 13 '13 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 '13 at 17:50
  • $\begingroup$ I do not see any issue with retagging those four questions. $\endgroup$ – Chris Godsil Sep 14 '13 at 19:09

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