Number Theory — Algebraic

: Developed by Richard Dedekind, this theory "restores" unique factorization by looking at ideals rather than individual elements.

: Numbers that are roots of monic polynomials with integer coefficients. Algebraic Number Theory

is a major branch of number theory that uses the techniques of abstract algebra to study integers, rational numbers, and their generalizations. It primarily investigates properties of algebraic number fields —finite extensions of the rational numbers Qthe rational numbers —and their rings of integers . Core Concepts and Motivations : Developed by Richard Dedekind, this theory "restores"

The field was historically motivated by the pursuit of Fermat’s Last Theorem . Early mathematicians discovered that while unique factorization into primes works for ordinary integers Zthe integers , it often fails in more general rings of integers. : In certain number rings, a single number

: In certain number rings, a single number can be factored into irreducibles in multiple ways. For example, in