An inclusion of observable nets satisfying duality induces an inclusion of canonical field nets. Any Bose net intermediate between the observable net and the field net and satisfying duality is the fixed– point net of the field net under a compact group. This compact group is its canonical gauge group if the occurrence of sectors with infinite statistics can be ruled out for the observable net ...

In this paper we give a description of the subsystem construct in the Uniied Modeling Language, emphasizing its dynamic aspects , thus giving a detailed description of the semantics of interaction with subsystems. Depending on whether the surroundings of the subsystem make use of public elements in the subsystem or not, the subsystem is considered to be open or closed, respectively. This leads ...

the investigation of relationship between political and administrative subsystems in the 'supreme model' of governance during history of humankind contribute to designing and modeling of better models of governance and administration. this model is retrieved in imam ali's words and manners. the present study seeks to investigate and describe the appropriate relationship between e...