NCKU Math colloquium
DATE	2007-03-08　16:10-17:00
PLACE	數學館地下室演講廳
SPEAKER	Koichiro Harada（Ohio State University）
TITLE	Frobenious-Schur indicators
ABSTRACT	For a finite group $G$, we consider the subset $\{ x x^y | x\in G\}$ for a fixed but arbitrary $y\in G$ and computer the twisted Frobenious-Schur indicator $\displaystyle \frac{1}{|G|}\sum \chi(xx^y)$, where $\chi\in Irr(G)$. We will also discuss some applications and give few open problems.