Set Theory Symbols

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Across
  1. 2. complement, A \ B
  2. 3. A = B
  3. 5. subset, A ⊄ B
  4. 6. A ⊆ B
  5. 10. set, Ø = { }
  6. 11. pair, (a,b)
  7. 12. { }
  8. 13. A ∪ B
  9. 14. of, a∈A
Down
  1. 1. #A
  2. 4. A ∩ B
  3. 7. set, 2A
  4. 8. Ac
  5. 9. difference, A ∆ B
  6. 12. A ⊇ B