在notes里有一段话，不理解。
"Diluted EPS are typically greater(abd never less than) basic EPS,so P/Es using diluted EPS will be lower,perhaps significantly so."
可是为什么Diluted EPS are typically greater(abd never less than) basic EPS呢，不是应该小于么？？

还有这句：Note that if diluted EPS when considering the convertible preferred stock is greater than basic EPS, the convertible preferred stock would be antidilutive and should not be treated as common stock in computing diluted EPS.
什么是 antidilutive？反稀释？为什么反稀释？优先股是不计入EPS计算的，转化成普通股之后，分子分母都应该增大了啊，怎么就反稀释了？