Difference of Sets

1.       There is one more thing that I didn’t tell about what I like to wear on my date.

2.       Well, I will certainly not wear any formals on the date. So I will remove all the formals from my choices.

3.       I have a choice of mix of formals and casuals and mix of formals and jeans wear.

4.       I will remove all the formals from the above two choices, and will take only those things that will remain.

5.       Removing formals, I have few things from my casuals and few things from my jeans wear. (I don’t have everything, as I have only considered Intersections and on the Intersections I am now applying my new rule)

6.       This rule of removal is basically what is called Difference of Sets.

Few formalized representations:

Difference between two sets A and B is denoted by A – B and is defined by: All elements of A that are not elements of B.