(a) Show that in a simple graph with n > 2 vertices, at least two vertices have the same degree.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter9: Systems Of Equations And Inequalities
Section9.3: Systems Of Inequalities
Problem 15E
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(a) Show that in a simple graph with n 2 2 vertices, at least two vertices have the
same degree.
(b) Explain why the total degree of a graph is twice the number of its edges.
Transcribed Image Text:(a) Show that in a simple graph with n 2 2 vertices, at least two vertices have the same degree. (b) Explain why the total degree of a graph is twice the number of its edges.
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