| Symbol | Symbol Name |
| { } | set |
| A ∪ B | A union B |
| A ∩ B | A intersection B |
| A ⊆ B | A is subset of B |
| A ⊄ B | A is not subset B |
| A ⊂ B | proper subset / strict subset |
| A ⊃ B | proper superset / strict superset |
| A ⊇ B | superset |
| A ⊅ B | not superset |
| Ø | empty set |
| P (C) | power set |
| A = B | Equal set |
| Ac | Complement of A |
| a∈B | a element of B |
| x∉A | x not element of A |
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