Exercises
[07W]If \((X,β€)\) is a well-ordered set and \(Yβ X\) is a subset, then \(Y\) (with the restriction of the ordering) \(β€\) is a well-ordered set.
[07W]If \((X,β€)\) is a well-ordered set and \(Yβ X\) is a subset, then \(Y\) (with the restriction of the ordering) \(β€\) is a well-ordered set.