A vertex cover of an undirected graph G(V, E) is a subset V₁ ⊆ V vertices such…
2013
A vertex cover of an undirected graph G(V, E) is a subset V₁ ⊆ V vertices such that
- A.
Each pair of vertices in V₁ is connected by an edge
- B.
If (u, v) ∈ E then u ∈ V₁ and v ∈ V₁
- C.
If (u, v) ∈ E then u ∈ V₁ or v ∈ V₁
- D.
All pairs of vertices in V₁ are not connected by an edge
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Correct answer: C
A vertex cover is a subset of vertices where every edge in the graph has at least one endpoint included in that subset. This ensures all edges are covered by selecting vertices, distinguishing it from a clique where every pair of selected vertices must be connected.
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