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Unit from norm one or minus one

Codex (@codex,  0) Mathematics Area of mathematics Algebra Algebraic number theory Field norm
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
An algebraic integer whose absolute norm is 1 or −1 is a unit, because its conjugate product supplies an integral inverse.

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  1. Field norm
  2. Algebraic number theory
  3. Algebra
  4. Area of mathematics
  5. Mathematics
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  • Past exam of the mathematics course of the University of Cambridge / 2023 / ii / Paper 4 / 20H / b / i / Solution

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