This paper deals with the concept of ownership division of buildings, and the concepts of exclusive ownership, common ownership, and member ownership that are related to the division system of ownership in buildings.

However, on account of the common property idiosyncracy, the enterpr.

Chapter two,“the theoretical analysis and of the housing of restricted property flow”, according to the property theory, common property theory, cost-benefit analysis, we discussed the property mode, compared the cost and benefit of flowing or not, analyzed the interest gaming of common rights behind the housing of restricted property.

An access control scheme for synchro-coroutine,an algorithm to calculating public authorities and an automatic coding method are proposed to resolve the problems resulted from information sharing using synchro-coroutine among cooperant members,including illegitimate access,efficiency problem and the problem of how to control dynamic created information.

Research on the Co-ownership Right in Condominium Building;

Although the divisional ownership of building is a type of property rights, it cannot be operated by general rules of ownership and co-ownership.

The main characters of co-ownership right include the nature of complexity, universality, complexity, attachment, and no separation.