Let S be a set of integers and assume that l is a least elem

Let S be a set of integers and assume that l is a least element of S. If l\' is some other least element of S, then l = l\'

Solution

Answer :

Let S be a set of integers and assume that L is a least element of S.

Then for any a S we have L a .

If L\' is some other least element of S, then L\' L

But from our assumption , L L \'

Since L\' L and L L \' so that L = L\'