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Unformatted text preview: b ∈ B such that b / ∈ A . Problem 2: (2 point) Suppose A and B are sets. Show that A = B iF and only iF A ⊆ B and B ⊆ A . see lecture notes Problem 3: (2 points) ²or each oF the Following symbols, what is the translation into “words”? (a) (0.5 points) ∈ “ in .” (b) (0.5 points) ∀ “ For all .” (c) (0.5 points) ∃ “ there exists .” (d) (0.5 points) ⇐⇒ “ iF and only iF .” 2...
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This note was uploaded on 10/18/2011 for the course MATH 19900 taught by Professor Schmidt during the Fall '07 term at UChicago.
 Fall '07
 SCHMIDT

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