E. Set Theory – “Set It Up”

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Across
  1. 2. (A') – Elements outside set A.
  2. 4. (∩) – Common elements between sets.
  3. 5. (∅) – No elements in the set.
  4. 9. (⊃) – Larger than another set.
  5. 10. (∪) – Combines elements from sets.
  6. 12. (⊇) – Contains another set.
  7. 13. (⊂) – Smaller than another set.
  8. 15. (∀) – Universal quantifier.
Down
  1. 1. (∉) – Not in a set.
  2. 3. (℘) – Set of all subsets.
  3. 6. (∃) – Existential quantifier.
  4. 7. (⊆) – Part of another set.
  5. 8. (ℕ) – Counting numbers.
  6. 11. (∈) – Belongs to a set.
  7. 14. (|A|) – Number of elements in a set.