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• 0Whole number

B

• Blackboard boldTypeface style used in mathematics

C

• Complex numberNumber with a real and an imaginary part

E

• E (mathematical constant)Base of natural logarithms

F

• FractionRatio of two numbers

I

• IntegerNumber in {..., –2, –1, 0, 1, 2, ...}

N

• Natural numberNumber used for counting
• Nominal numberType of unique identifier
• NumberUsed to count, measure, and label
• Number theoryBranch of pure mathematics

P

• PiNumber, approximately 3.14
• Prime numberNumber divisible only by 1 and itself

R

• Real numberNumber representing a continuous quantity

S

• Serial numberUnique code assigned for identification of a single unit

U

• Undefined (mathematics)Expression which is not assigned an interpretation

Z

• Zero to the power of zeroMathematical expression with disputed status