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English Word: 

Sigma KEE - DirectedGraph
DirectedGraph(directed graph)

appearance as argument number 1
-------------------------


(documentation DirectedGraph ChineseLanguage "这是有向图的 Class,有向图的所有 GraphArc 都 有方向,即是每一个 GraphArc 有一个始点(可参考 InitialNodeFn)和一个终点(可参考 TerminalNodeFn)。") chinese_format.kif 2326-2328
(documentation DirectedGraph EnglishLanguage "The Class of directed graphs. A directed graph is a Graph in which all GraphArcs have direction, i.e. every GraphArc has an initial node (see InitialNodeFn) and a terminal node (see TerminalNodeFn).") Merge.kif 5437-5440
(externalImage DirectedGraph "http://upload.wikimedia.org/wikipedia/commons/ a/ a2/ Directed.svg") pictureList.kif 1729-1729
(subclass DirectedGraph Graph) Merge.kif 5435-5435 Directed graph is a subclass of graph

appearance as argument number 2
-------------------------


(subclass GraphPath DirectedGraph) Merge.kif 5485-5485 Graph path is a subclass of directed graph
(subclass Tree DirectedGraph) Merge.kif 5452-5452 Tree is a subclass of directed graph
(termFormat ChineseLanguage DirectedGraph "有向图") chinese_format.kif 934-934
(termFormat EnglishLanguage DirectedGraph "directed graph") english_format.kif 1075-1075

antecedent
-------------------------


(=>
    (and
        (graphPart ?PATH ?GRAPH)
        (not
            (instance ?GRAPH DirectedGraph)))
    (<=>
        (instance ?PATH
            (GraphPathFn ?NODE1 ?NODE2))
        (instance ?PATH
            (GraphPathFn ?NODE2 ?NODE1))))
Merge.kif 5805-5811
(=>
    (and
        (instance ?GRAPH DirectedGraph)
        (instance ?ARC GraphArc)
        (graphPart ?ARC ?GRAPH))
    (exists (?NODE1 ?NODE2)
        (and
            (equal
                (InitialNodeFn ?ARC) ?NODE1)
            (equal
                (TerminalNodeFn ?ARC) ?NODE2))))
Merge.kif 5442-5450


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