Set Theory Symbols

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Across
  1. 1. a collection of elements
  2. 3. infinite cardinality of natural numbers set
  3. 4. ℝ
  4. 5. such that
  5. 7. Ø
  6. 9. objects that belong to set A and set B
  7. 12. all the objects that do not belong to set A
  8. 13. the number of elements of set A
  9. 14. ℂ
Down
  1. 1. set A is included in set B.
  2. 2. both sets have the same members
  3. 6. A×B
  4. 8. objects that belong to set A or set B
  5. 10. set A includes set B
  6. 11. ℚ