Set Theory Symbol List

List of set theory symbols

Symbol Symbol Name

1. {} Set

2. A ∪ B A union B

3. A ∩ B A intersection B

4. A ⊂ B Proper subset

5. a ∈ A Element of

6. b ∉ A Not element of

7. A ⊂ B Proper Subset/Strict subset

8. A ⊄ B Not a subset

9. A = B Equality

10. P(c) Power set

11. ∅ Empty set

12. lAl,# Cordinality

13. A ⊆ B Subset

14. A ⊅ B Not super set

15. A x B Cartesian product

16. (a, b,) Ordered pair

17. A’ or Ac Complement set

18. | Such that

19. A ⊇ B Super set

20. A ⊃ B Proper super set/Strict super set

21. A\B Relative complement

22. A – B Relative complement

23. A△B Symmetric difference

24. N Natural numbers set.

25. W Whole numbers set.

26. Q Rational numbers set.

27. Z Integer number set

28 . R Real numbers set.

29. Z⁺ Positive Integers set.

30. Q⁺ Positive rational set.

31. R⁺ Real numbers set.

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