Graph Theory: 65. 2-Chromatic Graphs

In this video we begin by showing that the chromatic number of a tree is 2. Yet, if the chromatic number of a graph is 2, this does not imply that the graph is a tree. We then prove that the chromatic number of a graph is 2 if and only if the graph is bipartite.
-- Bits of Graph Theory by Dr. Sarada Herke.
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