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Unformatted text preview: B C, x B C. In the second case, x C. Again by the definition of B C, x B C. Thus, in both cases, x B C. We have shown in general that if x A C, then x B C. Therefore, by the definition of subset, A C B C....
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This note was uploaded on 11/01/2010 for the course INFS 501 taught by Professor Ellis,w during the Spring '08 term at George Mason.
 Spring '08
 Ellis,W

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