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Unformatted text preview: X where x y and y z , we have x z . Question 1 Prove that ( A B ) c = A c B c . Question 2 Let X be a set of people. Do the following describe binary relations on X ? a) is an ancestor oF b) is a Family c) is the opposite sex to d) is at least as old as e) is Female f) is the same sex as g) is a blood relative to (ie. shares a common ancestor) or those that do describe binary relations on X , which of the properties refexivity , symmetry and transitivity hold?...
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This note was uploaded on 03/25/2011 for the course ECON 006 taught by Professor Bisin during the Spring '11 term at NYU.
 Spring '11
 Bisin

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