EntityQ3527115· pop 9· linked from 4 articlesLüroth's theoremSign in to savesubfield of K(X) is isomorphic to K(X)ConnectionsfieldEntityrational functionEntitymathematicsEntityInternational Standard Book NumberEntitydigital object identifierEntityfield extensionEntityalgebraic curveEntitysimple extensionEntityGauss's lemmaEntityprimitive element theoremEntityPaul CohnEntityJacob LürothEntitytranscendental extensionEntityGeometric genusEntityCategoriesAlgebraic varietiesBirational geometryField theoryTheorems in algebraic geometry