Earth 1

Number

The foundation: counting, integers, rationals, irrationals, and the continuum. How numbers encode magnitude and quantity.

Developed by Euclid

Key Concepts

  • Natural numbers
  • Integers
  • Rationals
  • Irrationals
  • Real numbers
  • Complex numbers

Characteristic Equation

ℝ = {x : x is a real number}

Further Reading

Introduction to Numbers and Counting