Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: I whakaarohia e Euler he whakawhanuitanga o te kupu "rahi" i nga wa maha. I roto i te take o 1 − 2 + 3 − 4 +..., he rite tonu ana whakaaro ki te mea e mohiotia ana inaianei ko te kohinga Abel:  Patai: He aha te whakaaro o Eulers e rite ana?
Te whakarāpopototanga a Abel