KnowraAlgebraic integerLinked fromLinked fromThe 8 pages that link to Algebraic integer, each with the reason it gives.All 8Broader topic 3Related 3Narrower topic 2Gaussian integerNarrower topic: Every Gaussian integer is an algebraic integer, but most algebraic integers are not in ℤ[i].Niven's theoremNarrower topic: The proof exploits an algebraic integer built from the angle, then uses its rationality to restrict its value.