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ArcoDelGrafo (GraphArc)

Graphs are comprised of GraphNodes and GraphArcs. Every GraphArc links two GraphNodes.

Ontology

SUMO / GRAPH-THEORY

Superclass(es)

[tree]
Entitá
is subclass of
  Astratto  
is subclass of
  ElementoDelGrafo  
is subclass of
  ArcoDelGrafo  

Subclass(es)

GrafoCiclico 

Coordinate term(s)

NodoDelGrafo 

Constrains relations

initial node fn  terminal node fn  arc weight  links 

Related WordNet synsets

See more related synsets on a separate page.

Axioms (5)

Se graph é un' istanza di GrafoDiretto e arc é un' istanza di ArcoDelGrafo e arc é una parte di graph, allora esiste node1,node2 tale che "il nodo iniziale di arc" is uguale a node1 e "il nodo terminale di arc" is uguale a node2.
(=>
      (and
            (instance ?GRAPH DirectedGraph)
            (instance ?ARC GraphArc)
            (graphPart ?ARC ?GRAPH))
      (exists
            (?NODE1 ?NODE2)
            (and
                  (equal
                        (InitialNodeFn ?ARC)
                        ?NODE1)
                  (equal
                        (TerminalNodeFn ?ARC)
                        ?NODE2))))

(=>
      (and
            (instance ?GRAPH GraphPath)
            (instance ?ARC GraphArc)
            (graphPart ?ARC ?GRAPH))
      (=>
            (equal
                  (InitialNodeFn ?ARC)
                  ?NODE)
            (not
                  (exists
                        (?OTHER)
                        (and
                              (equal
                                    (InitialNodeFn ?OTHER)
                                    ?NODE)
                              (not
                                    (equal ?OTHER ?ARC)))))))

(=>
      (and
            (instance ?GRAPH GraphPath)
            (instance ?ARC GraphArc)
            (graphPart ?ARC ?GRAPH))
      (=>
            (equal
                  (TerminalNodeFn ?ARC)
                  ?NODE)
            (not
                  (exists
                        (?OTHER)
                        (and
                              (equal
                                    (TerminalNodeFn ?OTHER)
                                    ?NODE)
                              (not
                                    (equal ?OTHER ?ARC)))))))

ElementoDelGrafo é esaustivamente partizionato in NodoDelGrafo,ArcoDelGrafo.
(partition GraphElement GraphNode GraphArc)

Se arc é un' istanza di ArcoDelGrafo, allora esiste node1,node2 tale che arc legas node1 e node2.
(=>
      (instance ?ARC GraphArc)
      (exists
            (?NODE1 ?NODE2)
            (links ?NODE1 ?NODE2 ?ARC)))