Set theory

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Across
  1. 3. A is a superset of B,set A includes set B
  2. 6. cardinality of countable ordinal numbers
  3. 7. collection of elements
  4. 8. set set of all possible values
  5. 10. objects that belong to set A or set B
  6. 11. object belongs to set A and set B
  7. 12. all subsets A
  8. 14. complement objects that belong to A and B
Down
  1. 1. set of all ordered pairs from A to B
  2. 2. collection of two elements
  3. 4. element of
  4. 5. A is a subset of B ,but A is not equal to B
  5. 9. Z
  6. 13. the number of elements of set A