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I read in http://gateoverflow.in/28955/given-vertex-edges-how-find-non-isomorphic-graphs-possible question explanantion,it was written that e=2n-3 where e= number of edges and n is no of vertices.

how is it derived??can anyone tell me the source??

asked in Graph Theory by Veteran (12.8k points)   | 31 views

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