Wikipedia:Articles for deletion/Generalized quaternion interpolation: Difference between revisions
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*'''Comment'''. The goal is to find a unit quaternion ''m'' such that preimages of the points <math>p_i</math> under the exponential map sum to zero in the tangent space to the unit sphere at ''m'' (with weights <math>w_i</math>). The point(s) ''m'' solving this problem is/are the same as the [[Karcher mean]] on the three-sphere. So the subject of the article is not nonsense, in my opinion. Whether it has enough sense to keep, I defer to others' judgement, although I lean slightly towards "keep and improve" myself. [[User:Sławomir Biały|<span style="text-shadow:grey 0.3em 0.3em 0.1em; class=texhtml">Sławomir Biały</span>]] ([[User talk:Slawekb|talk]]) 11:48, 27 April 2015 (UTC)
:*{{reply to|Slawekb}} Any leads on where this has been discussed in the literature? I've happy to give quite a bit of leeway on math articles, but without any sources I'm concerned about the [[WP:OR]] aspect. [[User:Lesser Cartographies|Lesser Cartographies]] ([[User talk:Lesser Cartographies|talk]]) 06:57, 28 April 2015 (UTC)
::: I was able to find this: http://labvis.isr.uc.pt/robomat/papers/T1_2.pdf, which does something similar but without the weights. [[User:Sławomir Biały|<span style="text-shadow:grey 0.3em 0.3em 0.1em; class=texhtml">Sławomir Biały</span>]] ([[User talk:Slawekb|talk]]) 11:06, 28 April 2015 (UTC)
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