PFANTE, OLIVER; BERTSCHINGER, NILS; OLBRICH, ECKEHARD; … - In: Advances in Complex Systems (ACS) 17 (2014) 02, pp. 1450007-1
Levels of a complex system are characterized by the fact that they admit a closed functional description in terms of concepts and quantities intrinsic to that level. Several ideas have come up so far in order to make the notion of a closed description precise. In this paper, we present four of...