zhanglihua93 发表于 2010-3-8 21:48 
请教各位高手,我在看一些研究生产函数的文献时经常看到“homotheticity"和“homogeneity”这两个单词,不知道在微观经济学的专用术语里面,这两个词到底是什么意思呢?
请高手指点一下。谢谢!
homotheticity:F(x) is a homothetic function if it can be written as F(x)=f(g(x)), where f is strictly increasing and g is homogeneous of degree one.
homogeneity: A real-valued function f(x) is called homogeneous of degree k if f(tx)=t^{k}*f(x) for all t > 0 .