On Cotilting Comodules Of Finite Injective Dimension

In this thesis we investigate the cotilting comodules of finite injective di-mension and the localization in cotilting comodules. In chapter 1 we give some notations,basic concepts,resarching background and the main results.In chapter 2 we study some properties and theories on cotilting comodules to obtain some meaning results.In chaper 3 we prove that the localizations of cotilting comodules are also cotilting comodules.