Niels Henrik Abel, a Norwegian, ati Évariste Galois, a Frenchman, fihan wipe nibẹ ni ko si gbogboogbo algebraic ọna fun solving polynomial equations ti iwọn ti o tobi ju mẹrin (Abel<unk>Ruffini theorem). miiran 19th orundun mathematicians lo yi ni wọn ẹri wipe straightedge ati compass nìkan ni o wa ko to lati trisect kan arbitrary igun, lati kọ awọn ẹgbẹ ti a onigun meji awọn iwọn didun ti a fun onigun, tabi lati kọ a square dogba ni agbegbe si a fun Circle. mathematicians ti vainly gbiyanju lati yanju gbogbo awọn wọnyi isoro niwon awọn akoko ti awọn atijọ Greek. ni apa keji, awọn ifilelẹ ti mẹta awọn nọmba ni geometry ti kọja ni 19th orundun nipasẹ awọn ero ti aaye ati hypercomplexity? Henrik Niels Ìbéèrè: Kini orilẹ-ede ni Abel?
Èdè Norwegian