Elijah's Set Theory Crossword

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Across
  1. 2. Both sets have the same members.
  2. 3. What does this symbol mean ⊄?
  3. 9. It is colloquially defined as a number that can be written without a fractional component.
  4. 10. It is the number of elements in a given mathematical set.
  5. 11. What does this symbol mean ⊇?
  6. 14. A \ B and A - B is what type of complement?
  7. 15. The ___of a set in math is defined as a set of elements in the universal set that is not part of the original set.
Down
  1. 1. What does this symbol mean ∩?
  2. 4. It is the set that does not contain anything.
  3. 5. It is a set that has elements of all the related sets, without any repetition of elements.
  4. 6. What does this symbol mean ⊃?
  5. 7. What does this symbol mean ∪?
  6. 8. What does this symbol mean ⊅?
  7. 12. What does this symbol mean ⊆?
  8. 13. A collection of elements.