Set Theory Symbols

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Across
  1. 4. objects that belong to set A or set B
  2. 6. The number of elements of set A
  3. 7. {}
  4. 8. ⊆
  5. 10. A is a superset of B, Set A includes set B
  6. 13. all the objects that do not belong to set A
  7. 14. ∅={}
  8. 15. Set A is not a superset of set B
Down
  1. 1. both sets have the same members
  2. 2. A is a superset of B, But B is not equal to A
  3. 3. A∩B
  4. 5. Set A is not a subset of set B
  5. 9. All subsets of A
  6. 11. Infinite cardinality of natural numbers set
  7. 12. set membership