EntityQ7268376· pop 5· linked from 8 articlesquadratically closed fieldSign in to savefield in which every element of the field has a square root in the fieldConnectionsPythagorean fieldEntitymathematicsEntityInternational Standard Book NumberEntitycomplex numberEntityreal numberEntitysquare rootEntityfieldEntityCambridge University PressEntityfinite fieldEntityfield extensionEntitycharacteristicEntityalgebraically closed fieldEntityMathematical ReviewsEntityembeddingEntityzbMATH OpenEntityconstructible numberEntityring homomorphismEntityalgebraic closureEntityeuclidean fieldEntityTsit Yuen LamEntityCategoriesField theory