Set Notation

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Last updated 7:59 AM on 9/14/26
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12 Terms

1
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∈

Belongs to/is in

2
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∉

Does not belong to/is not in

3
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∅

Empty Set

4
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∪

Union of

5
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∩

Intersection of

6
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⊆

Is a subset of

7
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‘

Complement, basically meaning not

8
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N

Natural Number (0,1,2,3…)

9
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Z

Integers (…-3, -2, -1, 0, 1, 2, 3…)

10
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Q

Rational Numbers

11
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I

Irrational Numbers

12
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R

Real Numbers(All numbers)