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

Ggraph

The graph to test.

Returns

bbool

A boolean that is True if G is an arborescence.

See also

is_tree

Notes

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