Mathematics, 29.08.2019 22:20, oseniiyabode123

(9) show that in a simple graph with at least two vertices there must be two vertices that have the same degree. (hint: for a proof by contradiction, consider the set of all possible degrees of a simple graph where no two vertices have the same degree. is there a problem with this set of numbers? ]

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(9) show that in a simple graph with at least two vertices there must be two vertices that have the...