Set Theory

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Across
  1. 3. A ⊂ B
  2. 6. #A
  3. 8. A = B
  4. 9. A ⊄ B
  5. 11. A ⊇ B
  6. 12. Ø
  7. 14. 2A
Down
  1. 1. |
  2. 2. |A|
  3. 4. {P}(A)
  4. 5. A ∪ B
  5. 7. A ∩ B
  6. 10. Ac
  7. 11. { }
  8. 13. A ⊆ B