老师,在alternative investment这一章中关于第108页讲义the fourth path,有一句话是“At expiry of swaps, the receiver of the floating leg pay the difference Between the realized volatility and the agreed-on strike times some pre-specified notional amount that is Not initially Exchanged’,想问一下通常所说的这个Floating leg应该是指的付浮动的一方?If so,但是为什么这里又说是the receiver of the Floating leg?那如果是收浮动的一方也就是付浮动负固定的一方,这个所谓的difference不应该是strike price减去the realized volatility吗,而不是相反?