Set Theory Symbols

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