Field

Author

John Robin Inston

Published

September 25, 2026

A field is any set \(F\) obeying the following field axioms:

  1. Addition is a binary operation
  2. Multiplication is a binary operation
  3. Addition is a commutative operation
  4. Multiplication is a commutative
  5. Addition is associative
  6. Multiplication is associative
  7. There is an additive identity in \(F\)
  8. There is a multiplicative identity in \(F\)
  9. There exists additive inverses in \(F\)
  10. There exits multiplicative inverses in \(F\)
  11. Multiplication distributes over addition

Some examples include the set of rational numbers \(\mathbb{Q}\), the set of integers \(\mathbb{Z}\) and the set of two elements \(\{0,1\}\) where addition and multiplication are taken modulo 2.

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