Using it the directed tree polynomial of a directed graph G can be found conveniently and efficiently.

应用它可以方便且有效地求出一个有向图G的有向树多项式。

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Line 1 declares your graph, called g, and its type (a digraph).

第一行声明这个图为g，并且声明了该图的类型(digraph)。

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To prove the theorem we shall suppose that the graph G is drawn on a sphere as described above.

为了证明这个定理，我们假定这个圆G能按上述方式画在一个球面上。

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In my last post, I defined Right Time Experiences as experiences that are derived by analyzing and combining contextual data from mobile (such as location, motion, prior usage behaviors) with data from your social graph and with data from the cloud that may be accessible via an API (e.g. weather, available parking in a area, restaurant table availability).

FORBES: Is Mobile Dead or Entering a New BattleGround?