SET THEORY

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Across
  1. 2. A ∪ B
  2. 5. such that
  3. 7. A is a subset of B. set A is included in set B.
  4. 10. a collection of elements
  5. 11. #A
  6. 12. |A|
  7. 13. Ø = { }
  8. 14. A is a superset of B. set A includes set B
  9. 15. A=B
Down
  1. 1. all subsets of A
  2. 3. A ∩ B
  3. 4. A ⊄ B
  4. 6. all the objects that do not belong to set A
  5. 8. {}
  6. 9. set of all possible values