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Set Theory
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Terms in this set (20)
What does ~A mean?
Not A. The universal set take away A.
What is a natural number?
A positive whole number
What does ∀ mean?
For all
What does <=> mean?
If and only if
What does A∩B mean
Intersection of A and B
What does intersection mean?
Objects that belong to A AND B
What does A∪B mean?
Union of A and B
What does A⊆B mean?
A is a subset of B
What does ∈ mean?
Element of
What does ∅ mean?
Empty Set
What is the compliment of A?
Everything that is not in A.
What is the relative compliment?
represented as A \ B, it is all the numbers in set A not in set B.
What does a∆b mean?
Symteric Difference
What is the symmetric difference?
The symmetric difference of A and B is everything in A and B but not in both.
What is the cardinallity of a set?
How many elements are in a set
What does |a| mean?
The cardinality of A
What does R denote in mathematics?
Real numbers
What does N denote in mathematics?
Natural numbers
What does Q denote in mathematics?
Rational numbers
What does Z denote in mathematics?
All the integers
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