Across
- 2. relative complement
- 4. power set
- 5. a collection of elements
- 7. proper set
- 8. all the objects that do not belong to set A
- 9. objects that belong to set A or set B
- 10. not subset
- 11. infinite cardinality of natural numbers set
- 12. A is a superset of B, set A includes set B
Down
- 1. both sets have the same numbers
- 3. the number of elements of set A
- 5. A is a subset of B. Set A is included in set B
- 6. objects that belong to set A and set B
- 7. Cartesian product
- 11. cardinality of countable ordinal numbers set