SET THEORY SYMBOLS

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Across
  1. 2. no set membership
  2. 6. A ⊇ B
  3. 7. A ⊂ B
  4. 8. A ⊆ B
  5. 10. collection of 2 elements
  6. 13. A={x|3<x<14}
  7. 14. Ø = { }
  8. 15. a collection of elements
Down
  1. 1. A \ B
  2. 3. the number of elements of set A
  3. 4. A ∆ B
  4. 5. all subsets of A
  5. 9. example A ∪ B = {3,7,9,14,28}
  6. 11. set all subsets of A
  7. 12. A ∩ B