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is_arborescence

is_arborescence(G)

Returns True if G is an arborescence.

An arborescence is a directed tree with maximum in-degree equal to 1.

Parameters:G (graph) – The graph to test. Returns:b – A boolean that is True if G is an arborescence. Return type:bool

Notes

In another convention, an arborescence is known as a tree.

See also

is_tree()