[Math] How many edges to be removed to always guarantee disconnected graph

discrete mathematicsgraph theory

Assumed undirected graph G is connected. G has $6$-vertices and $10$ edges.

What will be the minimum number of edges whose deletion from graph G is always guaranteed that it will become disconnected ?


I randomly tried for many graphs and can say that removing $3$ edges from most of them produces disconnected graph.

But, I don't have any proof or generalization to confirm this ? Is this correct ?

Best Answer

Hint: what is the average degree of your graph? There must be a vertex of at or below average degree. Try to disconnect this vertex from the graph.

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