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BC NETWORK ANALOGY.
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fig. BC1 (situation with the equivalent symbolic network).

Each of the basins of the example discussed in BB may be associated 
with an optimum (maximum, or minimum) point. Projecting them on the 
observation surface and interconnecting the projections we obtain 
a network. It may be shown that for a multitude of physical phenomena 
(particularily for those concerned, as our example, with potential 
fields) it is possible to map a given situation to an equivalent 
network. As examples of such phenomena let us mention the flow of 
viscous fluid through permeable and porous media, the flow of heat, 
the deformation of constrution elements under given stress conditions, 
the electric flow in a medium with continuous distribution of resistance
and capacity. All these phenomena are described by partial differential 
equations, whose solution is usually based upon the mapping of a 
continuous situation into a discrete network. In the case of 
electric flow, the involved network is associated with the name of 
Kirchhoff.

A SITUATION of ATTRACTORS and BASINS may be mapped into a NETWORK of
respectively VERTICES and EDGES. However, this mapping holds only for 
one given SCHEMA, or distribution of vertices and edges. Within this 
schema the network is capable of simulating the dynamics of the 
situation, i.e. the changes of potential at the attractors and the 
corresponding ractions of the basins (shrinking and expansion) 
respectively with help of similar changes of potential at the vertices.
The mapping is reversible: a given situation determines a specific
unique network, a given network determines a specific unique 
situation. 

Each vertex represents the dichotomy ENTITY. Its position within
the schema represents the entity TYPE, its potential - the INSTANCE.