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What notation is this?
A’ intersect B’

What notation is this?
A’ union B’

What notation is this?
A union B’

What notation is this?
A’ intersect B

What notation is this?
A intersect B’

What notation is this?
A’

What notation is this?
A triangle B / (A union B) - (A intersect B)

What notation is this?
A intersect B

What notation is this?
A union B
What does ∩ mean?
Intersect
What does ∪ mean?
Union
What does A’ mean?
Everything not in set A
What does ξ mean?
Universal set