we found all 16 spanning trees of K4 (the complete graph on 4 vertices). Which pairs of these trees are isomorphic to each other? A simple way of answering this question is to give the equivalence classes. How many classes (that is how many non-isomorphic spanning trees) do we have?
Added by Sara S.
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A spanning tree of a graph is a tree that includes every vertex of the graph and whose edges are edges of the graph. Next, we need to understand what it means for two trees to be isomorphic. Two trees are isomorphic if there is a one-to-one correspondence Show more…
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