Consider a digraph G = (V, E) with at least two nodes. Prove that the following...
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Consider a digraph G = (V, E) with at least two nodes. Prove that the following statements are equivalent: (i) G has a globally reachable node, and (ii) for every pair S₁, S₂ of non-empty disjoint subsets of V, there exists a node that is an out-neighbor of S₁ or S₂. Hint: Use induction on the number of nodes in V. Please use clear and readable handwriting Consider a digraph G = (V, E) with at least two nodes. Prove that the following statements are equivalent: (i) G has a globally reachable node, and (ii) for every pair S₁, S₂ of non-empty disjoint subsets of V, there exists a node that is an out-neighbor of S₁ or S₂. Hint: Use induction on the number of nodes in V. Please use clear and readable handwriting
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Related Book For
Introduction to Algorithms
ISBN: 978-0262033848
3rd edition
Authors: Thomas H. Cormen, Charles E. Leiserson, Ronald L. Rivest
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