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