hw12 - \ i I A i and [ i I A i . Exercise 36. Let A i , i I...

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Intro to Abstract Math Homework 12 Fall 2009 Due October 2 Exercise 34. Let A i , i I , be an indexed family of sets. Prove the second half of DeMorgan’s Law: \ i I A i ! c = [ i I A c i . Exercise 35. Let I = { 3 , 4 , 5 } , and for each i I let A i = { i,i + 1 ,i + 2 , 3 i } . Find
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Unformatted text preview: \ i I A i and [ i I A i . Exercise 36. Let A i , i I , be an indexed family of sets. If B is any set, prove that B [ i I A i ! = [ i I ( B A i ) ....
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