Talk:group action

RFD 2014

The following information passed a request for deletion.

This discussion is no longer live and is left here as an archive. Please do not modify this conversation, but feel free to discuss its conclusions.

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group action

This is just group+action. The math sense is covered at [[action]] (and sees much use outside this phrase, as in "the action of G on M"). I don't know sociology, but it also seems to be a simple sum of its parts. Delete.​—msh210℠ (talk) 06:32, 20 October 2013 (UTC)

Incidentally, our math sense at [[group action]] is terrible. If it gets kept, it will need to be reworded (to what's at [[action]] or similar).​—msh210℠ (talk) 06:37, 20 October 2013 (UTC)

Agreed. Delete.--Prosfilaes (talk) 18:27, 20 October 2013 (UTC)

First, I rewrote the definition here (without seeing what was at action).

Second, I could suggest this is backwards. Perhaps. There are different kinds of actions: algebra, monoid, monad, graded, category actions and so on. I'm not sure what the proper way to divvy up the meanings is. As I said in a different discussion, I try to stay away from my professional expertise here. I believe mathematics and dictionaries don't really mesh too well.

To clarify, mathematics is notorious for "abuse of language". An official full unambiguous language is effectively present, but then no one actually uses it, except for a few stray moments when the extra clarity is necessary. The result is that "action" is really "X action", except in situations when only "X actions" are considered, and no one mentions "X". And even when two or three kinds of actions are present, well, if the notation is well-chosen, it is always "clear from context" (ha!) which kind of action is meant. As it is, group actions are historically the first kind of action, and they remain the most common, so yes, by default the word "action" without context refers to "group action". But no one would say "I study actions", but "I study group actions." Choor monster (talk) 21:05, 23 October 2013 (UTC)

• Keep as revised. bd2412 T 16:56, 15 July 2014 (UTC)
• Keep per WT:JIFFY (which is pretty much what Choor monster said). — Keφr 18:17, 25 July 2014 (UTC)
  • I'm completely missing the "jiffy" part. Choor monster (talk) 16:10, 28 July 2014 (UTC)
  • I have just rewritten the mathematical sense of action. Choor monster (talk) 16:28, 28 July 2014 (UTC)

Kept.​—msh210℠ (talk) 06:57, 3 August 2014 (UTC)