EntityQ2020004· pop 22· linked from 104 articlesGalois extensionSign in to savealgebraic field extension where the automorphism group fixes precisely the base fieldConnectionsfield extensionEntitymathematicsEntityInternational Standard Book NumberEntityrational numberEntitydigital object identifierEntityfieldEntityJSTOROrganizationAlexander GrothendieckEntityCambridge University PressEntitysquare root of 2EntityQ22908627EntityEmil ArtinEntityroot of unityEntitySpringer Science+Business MediaEntitycharacteristicEntitySerge LangEntityGalois groupEntityEncyclopedia of MathematicsEntityBartel Leendert van der WaerdenEntityMathematical ReviewsEntityCategoriesAlgebraic number theoryField extensionsGalois theory