Number

sets of numbers

see set

• empty ‹set
• universal ‹set
  • ...
  • boolean
  • p-adic
  • floating-point number
  • fixed-point number
  • logarithmic number system
  • dual number
  • complex
    • imaginary
    • real
      • irrational
      • rational
        • fraction
        • integer
          • natural
            • 0
            • 1
            • prime
            • composite
          • negative integer

--- https://en.wikipedia.org/wiki/Natural_number