Isn't zero natural enough to be included in the set of natural numbers?
33705
Is $0$ a natural number?
51928
Use an induction argument to prove that for any natural number $n$, the interval $(n,n+1)$ does not contain any natural number.
132041
Numbers which cannot be formed
5375
Is there a bijective function mapping Natural numbers to Natural numbers, other than $f(n) = n$?
123498
Is "empty set" an element of a set?
72402
Summation of natural number set with power of $m$
17211
Is it wrong to tell children that $1/0 =$ NaN is incorrect, and should be $∞$?
40286
What's so "natural" about the base of natural logarithms?
14150
Zero to the zero power – is $0^0=1$?
67369
Why can't decimal numbers be represented exactly in binary?
21665
why division by zero is not possible
119982
how to express the set of natural numbers in ZFC
106881
Does "finite" include zero?
73846
Tell Wolfram Alpha that a variable is a natural number
45788
$n$-th digit in the sequence of natural numbers
153969
The "elements" of a real number
60869
Is induction valid when starting at a negative number as a base case?