Functions Flashcards
1
Q
∈
A
means is an element of
2
Q
:
A
means such that
3
Q
ℤ
A
means set of integers
4
Q
Q
A
means the set of rational numbers
5
Q
ℝ
A
means the set of real numbers
6
Q
define mapping
A
is any rule that associates two sets of items
7
Q
define domain
A
the set of all possible inputs of a mapping
8
Q
define range
A
the set of outputs for a specific set of inputs
9
Q
types of mapping
A
one-to-one
one-to-many
many-to-one
many-to-many
10
Q
one-to-one mapping
A
each object is mapped to exactly one image
11
Q
one-to-many mapping
A
an object may be mapped to two or more different images
12
Q
many-to-one mapping
A
two or more objects may be mapped to the same image
13
Q
many-to-many mapping
A
an object may be mapped to two or more different images and vice versa
14
Q
define function
A
is a mapping in which there is only one possible image for each object
