theory

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Across
  1. 2. when two sets have the same elements.
  2. 7. Difference objects that belong to A or B but not both.
  3. 9. objects that belong to set A or set B.
  4. 11. all objects that do not belong to a given set.
  5. 13. a collection of elements.
  6. 14. Superset a superset that is not equal to the smaller set.
  7. 15. Subset a subset that is not equal to the larger set.
Down
  1. 1. objects that belong to both set A and set B.
  2. 3. Complement objects that belong to set A but not to set B.
  3. 4. a set contained within another set.
  4. 5. membership of an item in a set.
  5. 6. Superset when set A is not a superset of set B.
  6. 8. a set that contains another set.
  7. 10. Subset when set A is not a subset of set B.
  8. 12. the set of all subsets of a given set.