Engari ko te tino kōkiri o muri o te kaupapa i mahia e te Georg Cantor; i te tau kotahi mano, i te tau1895, i whakaputaina e ia tētahi pukapuka mo tana ariā tautuhi hou, e whakamōhiotia ana, me ētahi atu mea, ko ngā tau huinga me te whakatakoto i te pēhi.