SET THEORY SYMBOLS

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Across
  1. 4. A is a superset of B
  2. 7. all subsets of A
  3. 9. Z
  4. 11. set membership
  5. 13. all the objects that do not belong to set A
  6. 14. objects that belong to set A or set B
  7. 15. A is a subset of B
Down
  1. 1. set of all possible values
  2. 2. collection of 2 elements
  3. 3. object that belong to set A and Set B
  4. 5. a collection of elements
  5. 6. A is a superset of B
  6. 8. objects that belong to A and not B
  7. 10. R
  8. 12. both sets have the same members