EntityQ1879333· pop 15· linked from 134 articlesbirational geometrySign in to savefield of algebraic geometry that seeks to determine when two algebraic varieties are birationally equivalent (isomorphic outside lower-dimensional subsets)ConnectionsmathematicsEntityInternational Standard Book NumberEntitycircleEntityrational numberEntitydigital object identifierEntityInternational Standard Serial NumberEntitypolynomialEntityJSTOREntityalgebraic geometryEntitybibcodeEntityPythagorean tripleEntityisomorphismEntityQ118398Entitynumber lineEntityCambridge University PressEntityrational functionEntityQ22908627Entityalgebraic varietyEntityCaucher BirkarEntitySpringer Science+Business MediaEntityCategoriesBirational geometry