Chapter 3: Problem 17
Is outranks transitive?
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Chapter 3: Problem 17
Is outranks transitive?
These are the key concepts you need to understand to accurately answer the question.
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Let outranks be an endorelation on the set of all crew members of the Enterprise, where \((x, y) \in\) outranks if character \(x\) has a higher Star Fleet rank than \(y\). Is outranks reflexive?
Above, we defined \(A\) as the set \(\\{\) Chuck, Julie, Sam \(\\}\) and \(S\) as the set \(\\{\) basketball, volleyball \\}. Then we defined the relation \(\\{\) (Julie, basketball), (Sam, basketball), (Julie, volleyball) \(\\}\). Is this relation a function?
Is \(\varnothing\) a relation between \(A\) and \(S ?\)
Let \(H\) be an endorelation on \(T\), defined as follows: { (Kirk, Kirk), (Spock, Spock), (Uhura, Scotty), (Scotty, Uhura), (Spock, McCoy), (McCoy, Spock), (Scotty, Scotty), (Uhura, Uhura) }. Is \(H\) reflexive?
Okay. Suppose we then remove (Julie, volleyball). We now have \(\\{\) (Julie, basketball), (Sam, basketball), (Chuck, basketball) \(\\} .\) Is this a function?
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