Talk:Quasitriangular Hopf algebra

confusion about phi
There is a confusion between two kinds of $$\phi$$. However I do not know how to correct it due to the following :
 * $$\phi$$
 * $$\phi\otimes$$

(see the wiki code to understand what confuse me). The one seems to be html while the other looks like LaTeX. How to force LaTeX everywhere ?

If anybody knows where these were first defined can they put that in the article? I believe they are attributed to both Drinfeld and Jimbo, but I do not know which articles. —Preceding unsigned comment added by 137.111.90.68 (talk) 04:11, 24 November 2007 (UTC)
 * You can force html by adding complicated characters or simply forcing spaces: $$\ \phi$$. You can also change phi in LaTex: $$\varphi$$ - that's closer to html. --Anton (talk) 20:37, 1 April 2009 (UTC)

I think it is also nice to say that the categories of representations of a quasitriangular Hopf algebra is braided. (Quasitriangular Hopf algebras are also called braided Hopf algebras for this reason.) —Preceding unsigned comment added by 130.54.16.83 (talk) 06:41, 24 February 2009 (UTC)

Notation
What does $$R \Delta(x)$$ mean? $$R \in H\otimes H, \Delta(x) \in H\otimes H$$, how are they multiplied? Is there a multiplication omitted? Or comultiplication? Or else? --Anton (talk) 20:37, 1 April 2009 (UTC)


 * Multiply in the usual way (a # b)(c # d) = ac # bd, so that $$R \Delta(x) = R(x_1 \otimes x_2)$$ (summation omitted). Does it help? 130.54.16.83 (talk) 05:57, 17 June 2009 (UTC)
 * Yes, thank you! --Anton (talk) 15:08, 20 June 2009 (UTC)

The notations $$R_{12}, R_{13}$$, ... should be explained on the page. — Preceding unsigned comment added by 130.223.147.248 (talk) 14:14, 10 February 2012 (UTC)