"Wigner function" as disambiguation page or as redirect
I want to remove the disambiguation page and restore the redirect, if this would not cause any damage. It's a complex topic area, of which I have only a very faint understanding, so I want to lay out my reasoning for review by
MJCizek or others.
Note there is
Wigner Function article title which remains as a redirect to the quasiprobability distribution article. It currently has one usage, from
Sadollah Nasiri Gheydari article.
Currently the
Wigner function title has eight inbound links, from the following articles:
The inbound links to a disambiguation page are targeted to be fixed by
wp:DPL editors trying to eliminate links to dab pages.
Reasoning to change back to a redirect:
From my review of the usages in those articles, though the topic area is over my head, I think they all would properly link to the "quasiprobability distribution" article, not the D-matrix one. The links are currently "bad", coming to a disambiguation page. All eight would be fixed by restoring the redirect. If that is done, then, right away, following the link in those articles would bring one to the quasiprobability distribution article. Other future usages of "Wigner function" in articles will usually mean the quasiprobability distribution, too, I am surmising. (Note, either way, the
Wigner Function redirect should be updated to go to wherever
Wigner function goes.)
Also, the
Wigner D-matrix article does not mention "Wigner function" much less that it is a synonym. Superficially, it seems to me that referring to a Wigner D-matrix as a Wigner function is technically wrong; the first is literally a square matrix, not a function.
If in some article an editor uses "Wigner function" (and wikilinks it) when they mean "Wigner D-matrix", when they review their changes they would not be surprised to find the wikilink goes to the "Wigner quasiprobability distribution" target. They would have to change their usage to an explicit link or a piped link to "Wigner D-matrix" instead.
The purpose of the disambiguation page can be achieved by a hatnote at the quasiprobability distribution article. The hatnote could be something like: "For the irreducible representation of the rotation group SO(3), sometimes called a Wigner function, see
Wigner D-matrix." And I don't think a hatnote at the D-matrix page is needed. (Drafted, but not being used: "The term Wigner function, though sometimes referring to Wigner D-matrix, more often means
Wigner quasiprobability distribution, a distribution used in quantum physics.")
Question: Should the hatnote be revised to mention the SU(2) group? Would wording as follows be correct: "For an irreducible representation of the rotation group SU(2) or of SO(3), sometimes called a Wigner function, see
Wigner D-matrix" Or could this otherwise be improved to mention SU(2)?
For the above reasons, I think I am going to go ahead with the hatnote and with redirecting, even though my knowledge of this topic area is very low. If someone knows better, please do speak up here, explain what is best, and that can be implemented instead. I don't mind being reverted. --
doncram19:54, 22 August 2015 (UTC)reply
"Wigner function" as disambiguation page or as redirect
I want to remove the disambiguation page and restore the redirect, if this would not cause any damage. It's a complex topic area, of which I have only a very faint understanding, so I want to lay out my reasoning for review by
MJCizek or others.
Note there is
Wigner Function article title which remains as a redirect to the quasiprobability distribution article. It currently has one usage, from
Sadollah Nasiri Gheydari article.
Currently the
Wigner function title has eight inbound links, from the following articles:
The inbound links to a disambiguation page are targeted to be fixed by
wp:DPL editors trying to eliminate links to dab pages.
Reasoning to change back to a redirect:
From my review of the usages in those articles, though the topic area is over my head, I think they all would properly link to the "quasiprobability distribution" article, not the D-matrix one. The links are currently "bad", coming to a disambiguation page. All eight would be fixed by restoring the redirect. If that is done, then, right away, following the link in those articles would bring one to the quasiprobability distribution article. Other future usages of "Wigner function" in articles will usually mean the quasiprobability distribution, too, I am surmising. (Note, either way, the
Wigner Function redirect should be updated to go to wherever
Wigner function goes.)
Also, the
Wigner D-matrix article does not mention "Wigner function" much less that it is a synonym. Superficially, it seems to me that referring to a Wigner D-matrix as a Wigner function is technically wrong; the first is literally a square matrix, not a function.
If in some article an editor uses "Wigner function" (and wikilinks it) when they mean "Wigner D-matrix", when they review their changes they would not be surprised to find the wikilink goes to the "Wigner quasiprobability distribution" target. They would have to change their usage to an explicit link or a piped link to "Wigner D-matrix" instead.
The purpose of the disambiguation page can be achieved by a hatnote at the quasiprobability distribution article. The hatnote could be something like: "For the irreducible representation of the rotation group SO(3), sometimes called a Wigner function, see
Wigner D-matrix." And I don't think a hatnote at the D-matrix page is needed. (Drafted, but not being used: "The term Wigner function, though sometimes referring to Wigner D-matrix, more often means
Wigner quasiprobability distribution, a distribution used in quantum physics.")
Question: Should the hatnote be revised to mention the SU(2) group? Would wording as follows be correct: "For an irreducible representation of the rotation group SU(2) or of SO(3), sometimes called a Wigner function, see
Wigner D-matrix" Or could this otherwise be improved to mention SU(2)?
For the above reasons, I think I am going to go ahead with the hatnote and with redirecting, even though my knowledge of this topic area is very low. If someone knows better, please do speak up here, explain what is best, and that can be implemented instead. I don't mind being reverted. --
doncram19:54, 22 August 2015 (UTC)reply