A Semionic Networks (SNs), see below, is a Semionic
System with some topological restrictions given by the addition of two types of
passive entities: places and arcs.
The topological restrictions says respect to two main
points, directly related to the enabling and generative scope:
Place: be
a class C. A place Õ is
defined as a passive entity that contains zero or more objects (active or
passive) of the same class C. Besides, if C goes an active class; it is
said that Õ
is an active
place, case contrary a passive place, see
below.
Arc: is defined as a
connection between an output gate (linked to the origin place) and
an input gate (linked to the destiny place), see below.
Gate:
are classified in two orthogonal characteristics, see below. The first
one - and the simplest - refers to the direction of the flow of
information; be entering or leaving the place, see above. The
second one indicates as the objects are inserted or removed of the
place.
In the internal
behavior of a gate two different possibilities are
present:
From the
superficial conceptualization of an arc
and of the characterization of the types of gates is derived a more detailed
classification of type of the possible arcs. Two combinations are just
considered valid:
Other
combinations of gates are:
The difference
between publics-privates and public-public arcs can be understood better
from the illustration below. It illustrates all the four possible
combinations of gates.