EntityQ5988007· pop 5· linked from 18 articlesIdeal normSign in to savethe ideal-theoretic generalization of the field normConnectionsalgebraic number fieldEntityring of algebraic integersEntityfractional idealEntityInternational Standard Book NumberEntitynumber theoryEntityrational numberEntitydigital object identifierEntityringEntityJean-Pierre SerreEntityidealEntitycommutative algebraEntitygroup homomorphismEntityfield extensionEntityprime idealEntityMathematical ReviewsEntityfield of fractionsEntityquotient ringEntityGalois extensionEntityembeddingEntityunitEntityCategoriesAlgebraic number theoryCommutative algebraIdeals (ring theory)