Qurak

DirectedEdge

可用

Represents a directed edge between two vertices

DirectedEdge[u, v]or u \[DirectedEdge] v
DirectedEdge[u, v, t]or u v
DirectedEdge[a, b] → a  bGraph[{DirectedEdge[a, b], DirectedEdge[b, c], DirectedEdge[c, a]}] → Graph[<3>, <3>]

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