Crossword Puzzle 5 Set Theory Symbols

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Across
  1. 2. both sets have the same members
  2. 4. objects that belong to set A and set B
  3. 7. A ⊖ B
  4. 9. infinite cardinality of natural numbers set
  5. 10. {C} = {z | z=a+bi, -∞<a<∞,-∞<b<∞}
  6. 12. Ø
  7. 13. the number of elements of set A
  8. 14. set of all ordered pairs from A and B
  9. 15. objects that belong to set A or set B
Down
  1. 1. all subsets of A
  2. 3. set set of all possible values
  3. 5. a collection of elements
  4. 6. (a,b)
  5. 8. A is a subset of B. set A is included in set B.
  6. 11. A ⊄ B