EntityQ2916820· pop 6· linked from 32 articlesHilbert class fieldSign in to savemaximal abelian unramified extension of a number fieldConnectionsSpringer Science+Business MediaEntityclass field theoryEntityquadratic fieldEntityj-invariantEntityideal class groupEntityInternational Standard Book NumberEntityDavid HilbertEntityprime numberEntityreal numberEntitydigital object identifierEntityfieldEntityidealEntityelliptic curveEntityalgebraic number theoryEntityalgebraic number fieldEntityautomorphismEntityprime idealEntityfield extensionEntityGalois groupEntityPlanetMathEntityCategoriesClass field theory