Mathematics for Computer Science

(avery) #1

Chapter 9 Directed graphs & Partial Orders318


in 0 in 1 in 2

out 0 out 1 out 2

Figure 9.2 A 6-switch packet routing digraph.

x1


x3 x4


x7


x6


x2


x5


Figure 9.3 Links among Web Pages.
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