### Venn diagram equations

∩ = And or Λ

υ = Or or V

– = not or ¬

Intersection – Where two circles connect and make another section

Union – All the numbers within the circles

Complement – The area outside of the circles but inside the box, specifically the numbers in this area

Disjoint – When the circles do not intersect

Power sets

If A = {1, {1}, {2}, 3}

The elements are each of the items within the outside brackets eg. 1, {1}, {2}, 3

The subset is the format of each item of a set eg. {1},{{1}}, {{2}}, {3}