3. Let T be a tree and let v be a vertex of T. Show that...
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3. Let T be a tree and let v be a vertex of T. Show that the following two statements are equivalent (a) v is a leaf. (b) T\{v} is a tree. (40 points) 3. Let T be a tree and let v be a vertex of T. Show that the following two statements are equivalent (a) v is a leaf. (b) T\{v} is a tree. (40 points)
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