Talk:Yetter–Drinfeld category
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Untitled
[edit]As I was doing the Nichols algebra page, one needs to introduce the YDM-cosntrction via conjugacy classes. Hence, I tried to present both the abstract construction as an induced module and the custom notation of writing "conjugate times vector"....however, I myself am not so satisfied with the result so far. Any suggestion for improvment? Should we delete the former (or the latter)?Pacman 2.0 (talk) —Preceding undated comment added 20:00, 11 July 2011 (UTC).
anomalous omission
[edit]This article rather strangely omits all omission of who Yetter and Drinfeld are. That should usually be in the first paragraph, often in the first or second sentence. Michael Hardy (talk) 02:22, 12 July 2011 (UTC)
Untitled
[edit]I think the inverse of the braiding of two Yetter-Drinfeld modules is via the inverse of the antipode not the antipode itself. That's probably why you assume that the underlying Hopf algebra has an invertible antipode. — Preceding unsigned comment added by 193.54.42.174 (talk) 16:56, 13 December 2017 (UTC)