Set Theory

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Across
  1. 5. - ⊂
  2. 6. of - ∈
  3. 7. - ⊃
  4. 8. - {x∣P(x)} (the set of all xxx such that P(x) is true)
  5. 13. - ∩=∅\cap (often used to denote that two sets have no elements in common)
  6. 14. of - ∈
  7. 15. - ⊇
Down
  1. 1. - Ac or Aˉ
  2. 2. - ∅\ or {}
  3. 3. - ×
  4. 4. - ∩
  5. 7. - ∖ or −
  6. 9. - ∪
  7. 10. - U or U
  8. 11. - ⊆
  9. 12. - P(A) or 2A