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、
泽与威利格等人提出的“成本劣加性”相类似的概念——价
优加性,并证明了网络经济的总价
函
和总收益函
有严格优加性;