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15 Cards in this Set

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  • Back
Singleton Set
a set having exactly 1 element
Set
any collection of objects or elements
Subset
A is a subset of B IFF every element of A is also in B
Union of 2 Sets
union of 2 sets A and B is the set of all elements that are in set A or B
Intersection of 2 Sets
elements that are in set A and B
Disjoint
2 sets with no elements in common. 2 sets A and B are disjoint if their intersection is empty
Solution Set
set of all elements from the domain that make the statement true.
Empty Set
a set that has no elements
Natural Numbers
numbers as you would count. {1,2,3,...)
Whole Numbers
Natural numbers plus {0}
Integers
whole numbers plus negatives.
Opposites
2 numbers that have a sum of 0
Rational Numbers
any number that can be written as a ratio of 2 integers but the demoninator cannot be 0. all repeating decimals are rational.
Irrational Numbers
non-terminating, non-repeating decimals like the square root of 2 or Pi. all non-perfect squares are irrational.
Real Numbers
Rational numbers in union with(in addition to) irrational numbers