EntityQ912083· pop 13· linked from 129 articlesideal class groupSign in to savemathematical set in algebraic number theoryConnectionsidealEntityalgebraic number fieldEntityunique factorization domainEntityunitEntityfractional idealEntitymathematicsEntityCarl Friedrich GaussEntityInternational Standard Book NumberEntityprime numberEntityintegerEntityreal numberEntitymathematical proofEntitydigital object identifierEntitygroupEntityFermat's Last TheoremEntityRichard DedekindEntitycommutative propertyEntityringEntityfieldEntityfundamental theorem of arithmeticEntityCategoriesAlgebraic number theoryIdeals (ring theory)