a) Let Gz (v, E) be an undinected let each edge e e E have weight weight le), and suppose all eds weights connected gnaph, IvI >? are diffesent. Let T be a minimuM Spanning tnee in. G. Then, the edge of minimum weight in G must belong to T. connect anaph G=(V,E), IVI> 3, has tree, then all the edge weights b) In undirected an are sponning minimum unique different.

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