Set Theory Symbols

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Across
  1. 3. AxB
  2. 4. A∆B
  3. 5. {}
  4. 7. no set membership
  5. 9. |A|
  6. 11. ∅
  7. 13. A\B
  8. 14. A U B
  9. 15. set of all possible values
Down
  1. 1. (a,b)
  2. 2. all subsets of A
  3. 6. A=B
  4. 8. set membership
  5. 10. all the objects that do not belong to Set A
  6. 12. |