机译:按组操作对类别和量子群进行分级扭曲
Univ Blaise Pascal, Lab Math, Campus Univ Cezeaux,3 Pl Vasarely, F-63178 Aubiere, France;
Univ Oslo, Dept Math, POB 1053 Blindern, NO-0316 Oslo, Norway;
Ochanomizu Univ, Dept Math, Bunkyo Ku, Otsuka 2-1-1, Tokyo 1128610, Japan;
quantum group; monoidal category; grading; pseudo-2-cocycle;