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sleet_krkn [62]
3 years ago
11

Show that a directed multigraph having no isolated vertices has an euler circuit if and only if the graph is weakly connected an

d the in-degree and out-degree of each vertex are equal
Physics
1 answer:
sergeinik [125]3 years ago
5 0
If we let
p as the directed multigraph that has no isolated vertices and has an Euler circuit
q as the graph that is weakly connected with the in-degree and out-degree of each vertex equal

The statement we have to prove is
p ←→q (for biconditional)
Since
p → q (assuming that p is strongly connected to q)
q ← p (since p is strongly connected to q)
Therefore, the bicondition is satisfied
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