In algebraic number theory, a cyclotomic field is a number field obtained by adjoining a complex root of unity to Q {\displaystyle \mathbb {Q} } , the field of rational numbers. Cyclotomic fields played a crucial role in the development of modern algebra and number theory because of their relation with Fermat's Last Theorem.
In algebraic number theory, a cyclotomic field is a number field obtained by adjoining a complex root of unity to Q {\displaystyle \mathbb {Q} } , the field of rational numbers. Cyclotomic fields played a crucial role in the development of modern algebra and number theory because of their relation with Fermat's Last Theorem.
Source: Wikipedia "Cyclotomic field" · CC BY-SA 4.0
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