2) putting forward the concept of "strict superadditivity" and proving that total value function and total revenue function of network economy have strict superadditivity;
(2)明确提出了一个与鲍莫尔、潘泽与威利格等人提出的“成本劣加”相类似的概念——价
优加
,并证明了网络经济的总价
函数
总收益函数具有严格优加
;