The Natural Numbers, $\Bbb{N},$ are the positive integers. Some people include zero, and some people don't. Some people put a decoration on the symbol to indicate that zero definitely is, or definitely is not included.

There is no consensus, so care must be taken.

MixedNumber
MultiplyingWholeNumbers
PerfectNumber
RootTwoIsIrrational
SquareNumber
SubtractingWholeNumbers
Surd
TranscendentalNumber
TypesOfNumber
BirthdayProblem
CantorSet
PascalsTriangle
Permutation
RationalNumber
TransfiniteNumbers
ZeroFactorial
CountingNumber
WholeNumber
ContinuumHypothesis
CountableSet
Factorial
GeorgCantor
MathematicsTaxonomy

## You are here

NaturalNumber
Integer
(none) (none) RealNumber