请问：

1、For p>b^p, it pays for the new firm to transfer all mass from an x-neighborhood above p-v to some y-neighborhood below p-v.

2、Denote by mj(p)>0 the size  of a mass point at price p in shop j's price distribution.

先行谢过啦！！

[此贴子已经被作者于2009-3-24 12:37:34编辑过]