EntityQ6889722· pop 6· linked from 27 articlesModular lambda functionSign in to savea highly symmetric holomorphic function on the complex upper half-planeConnectionscross-ratioEntitymodular curveEntitymathematicsEntityInternational Standard Book NumberEntityrational numberEntitySrinivasa RamanujanEntitydigital object identifierEntityCarl Gustav Jacob JacobiEntitygamma functionEntityalgebraic numberEntitysquareEntityQ229883EntityCambridge University PressEntitycomplex planeEntityJohn Horton ConwayEntityholomorphic functionEntityalgebraic equationEntityrational functionEntityelliptic curveEntityOn-Line Encyclopedia of Integer SequencesEntityCategoriesElliptic functionsModular forms