Set Theory Symbols

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Across
  1. 2. the number of elements of set A
  2. 5. set of all possible values
  3. 7. 0={}
  4. 8. objects that belong to A and not to B
  5. 9. a is a subset of B. set A is included in set В.
  6. 12. objects that belong to set A or set B
  7. 13. both sets have the same members
  8. 15. a collection of elements
Down
  1. 1. collection of 2 elements
  2. 3. infinite cardinality of natural numbers set
  3. 4. set of all ordered pairs from A and В
  4. 6. a is a superset of B. set A includes set B
  5. 10. objects that belong to set A and set B
  6. 11. all the objects that do not belong to set A
  7. 14. cardinality of countable ordinal numbers set