Math 7311, Analysis 1, Homework #5. Due Monday, Sept
24, at 11:30 in Class
1) Let (X, A) be a measurable space and Y a non-empty set. If f :
X Y is a function dene B = cfw_A Y | f 1 (A) A. Show that B
is a -algebra.
2) (Exercise 3.27, p. 52). For > 0 cons