This preview shows page 1. Sign up to view the full content.
Unformatted text preview: b. x F \ G ; here F and G are families of sets. c. x u i I ( A i B i ); here each A i and B i is a set, and I is an index set. d. x {P ( A )  A F} ; here F is a family of sets. 3 Show that ( F ) ( G ) = ( F G ); here F and G are families of sets. 4 Let us deFne A = . Then for each n 1, let A n = A n1 { A n1 } . Please dont freak out: this is not a potential exam problem (yet). a. Write out A 1 , A 2 , and A 3 . b. What is  A n  ? c. DeFne A = u n N A n . What is  A  ? d. Make a sensible deFnition for A +1 . What is  A +1  ? Is this set equal to A ? Why or why not? e. Make a sensible deFnition for A 2 ....
View Full
Document
 Fall '09
 LARSON

Click to edit the document details