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| |[[Characteristic Logic Equation]] | |[[Characteristic Logic Equation]] | ||
| |Expresses the necessary and sufficient conditions to be satisfied by the entries in an [[Interconnection Matrix]] M<sub>BA</sub>, that interconnects two hierarchical digraphs A<sup>*</sup> and B<sup>*</sup> for which M<sub>AB</sub> = 0.   | |Expresses the necessary and sufficient conditions to be satisfied by the entries in an [[Interconnection Matrix]] M<sub>BA</sub>, that interconnects two hierarchical digraphs A<sup>*</sup> and B<sup>*</sup> for which M<sub>AB</sub> = 0.   | ||
| |ref | |||
| |- | |||
| |34 | |||
| |[[Cascade Interconnection of Digraphs]] | |||
| |Two digraphs are said to be cascaded if all interconnections are oriented from one of the digraphs to the other.  | |||
| |ref | |||
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| |35 | |||
| |[[Digraphs]] | |||
| |A directed graph, also called a digraph, is a graph in which the edges have a direction. | |||
| |ref | |ref | ||
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