Digraphs: Difference between revisions
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The formal definition is: | The formal definition is: | ||
If v and w are vertices, an edge is an unordered pair {v,w}, while a directed edge, called an arc, is an ordered pair (v,w) or (w,v). | If v and w are vertices, an edge is an unordered pair {v,w}, while a directed edge, called an arc, is an ordered pair (v,w) or (w,v). | ||
[[Category: ISM Terminology]] | |||
Latest revision as of 11:28, 10 January 2022
A digraph is a directed graph; a graph in which the edges have a direction.
This is usually indicated with an arrow on the edge.
A Digraph portrays a Contextual Relation among the elementsof the system and can be converted into an [[Interpretive Structural Model of the system with respect to that relation.
The formal definition is: If v and w are vertices, an edge is an unordered pair {v,w}, while a directed edge, called an arc, is an ordered pair (v,w) or (w,v).