The half-twist for U_q(g) representations
The half-twist for U_q(g) representations
复制标题
U_q(g) 表示的半扭转
DOI:
10.2140/ant.2009.3.809
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发表时间:
2008
期刊:
影响因子:
--
通讯作者:
P. Tingley
中科院分区:
文献类型:
--
作者:
Noah Snyder;P. Tingley
We introduce the notion of a half-ribbon Hopf algebra, which is a ribbon Hopf algebra along with a distinguished element $t$ corresponding to twisting a ribbon by 180 degrees (the half-twist). We show that U_q(g) is a (topological) half-ribbon Hopf algebra, but only if one uses a modified ribbon element. We then discuss some consequences of using this modified ribbon element.