EDB — 247

Exercises

1. [247]Prerequisites:[23W]↺↻,[23T]↺↻.(Solved on 2022-10-25) Now that you have correctly defined the union [1W1]↺↻ and the intersection [1Y2]↺↻ using the Z-F axioms, tell what value are assumed by

   \[ ⋂_{i∈ I}C_ i \]

   and

   \[ ⋃_{i∈ I}C_ i \]

   when \(I\) is the empty set.

   Solution 1

   [249]↺↻