Across
- 3. objects that belong to set A and set B
- 7. cardinality of countable ordinal number set
- 9. both sets have the same numbers
- 11. set of all possible values
- 12. a collection of elements
- 13. all the objects that do not belong to set A
- 14. set A is a superset of B
Down
- 1. infinity cardinality of natural number set
- 2. the number of elements of set A
- 4. collection of 2 elements
- 5. set A is a subset of B
- 6. all subsets of A
- 8. ∅
- 9. set membership
- 10. objects that belong to set A or B