Numbers
Group of numbers written as N
What is NATURAL NUMBERS
Written using the symbol "∩", e.g. A∩B
What is the intersection
Symbol which shows that both sides of this sign have the same value
What is EQUAL SIGN ("=")
Diagram with a box in which there are circles showing different sets.
What is VENN DIAGRAM
A group of things are called this three letter word.
What is a SET
Group of numbers written as Z
Written using the symbol "∪", e.g. A∪B
What is the UNION
The symbol ∈ means this, e.g. x ∈ Z
What is "BELONGS TO", x ∈ Z shows that x belongs to integers Z and therefore is an integer.
n(A) refers to this thing
Set A is this if n(A) has a particular defined value
What is FINITE
Group of numbers written as Q
What are RATIONAL NUMBERS
Written using the symbol "⊆", e.g. A⊆B
What is a SUBSET
The symbol ∉ means this, e.g. x ∉ Q
What is "DOES NOT BELONG TO", x ∉ Q says that x is not rational and therefore has to be irrational.
What is THE UNIVERSAL SET
Set A is this if n(A) does not have a particular defined value
What is INFINITE
Group of numbers written as R
What are REAL NUMBERS
A'
What is A COMPLEMENT or EVERYTHING WHICH IS NOT A
Written using the symbol "⊂", e.g. A⊂B
What is a PROPER SUBSET
The meaning of { x ∈ Z | 2 < x < 5}
What is X IS AN INTEGER SUCH THAT IT IS LARGER THAN TWO BUT SMALLER THAN 5 or X IS EITHER 3 OR 4.
A∪A' =
A and not A
Group of numbers written as C
What are COMPLEX NUMBERS
"∅" or {}
What is an EMPTY SET
Disjoint or mutually exclusive sets do NOT have this.
What is HAVE NO INTERSECTION, or HAVE NO ELEMENTS IN COMMON
If this is true, two sets are equal
What is IF TWO SETS CONTAIN THE EXACT SAME ELEMENTS
What is the name of Mr Loves Dog
Daphne