EDB — 127

Exercises

1. [127] Prerequisites:[125]↺↻,[124]↺↻.

   Let \(\tilde B=\{ -b:b∈ B\} \): show that \((A ⊕ B)^ c=A^ c ⊖ \tilde B\), where \(A^ c= X⧵ A\) is the complementary.

   Solution 1

   [128]↺↻