A playground consists of several structures, some of which are connected by bridges. The ground is covered with bark chips. Define a relation on the set of structures on the playground as follows: two structures are related if it is possible for a child to get from one to the other without walking on the bark chips (otherwise known as "hot lava"). (a) Can you imagine a playground for which this would not be an equiv- alence relation? Explain. (b) Suppose this relation is an equivalence. In the language of play- ground equipment, describe the equivalence classes.
A playground consists of several structures, some of which are connected by bridges. The ground is covered with bark chips. Define a relation on the set of structures on the playground as follows: two structures are related if it is possible for a child to get from one to the other without walking on the bark chips (otherwise known as "hot lava"). (a) Can you imagine a playground for which this would not be an equiv- alence relation? Explain. (b) Suppose this relation is an equivalence. In the language of play- ground equipment, describe the equivalence classes.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter1: Fundamentals
Section1.7: Relations
Problem 14E: In each of the following parts, a relation is defined on the set of all human beings. Determine...
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