Problem 1 Bridges of Königsberg. The first paper on graph theory was written by Euler in 1736. In this paper, he started with the following mathematical puzzle: The city of Königsburg has seven bridges, arranged as shown in Figure 1 Is it possible to start at some place in the city, cross every bridge exactly once and return to the starting place? Either specify such a tour or prove that it is impossible to do so. Figure 1 Bridges of Königsberg. Problem 2 Show that every tree is a bipartite graph. Problem 3 Let d denote the minimum degree of a node in an undirected graph G. Show that if d 2. min "min then G must contain a cycle.
Problem 1 Bridges of Königsberg. The first paper on graph theory was written by Euler in 1736. In this paper, he started with the following mathematical puzzle: The city of Königsburg has seven bridges, arranged as shown in Figure 1 Is it possible to start at some place in the city, cross every bridge exactly once and return to the starting place? Either specify such a tour or prove that it is impossible to do so. Figure 1 Bridges of Königsberg. Problem 2 Show that every tree is a bipartite graph. Problem 3 Let d denote the minimum degree of a node in an undirected graph G. Show that if d 2. min "min then G must contain a cycle.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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